[1] What does the symbol R in electricity stand for?
A.
Refraction
B.
Resonance
C.
Rarefaction
D.
Resistance
Ans:
Resistance
Explanation :
In electricity, R stands for resistance, the property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current.
[2] The velocity of light in vacuum is :
A.
3 * 108 ms-1
B.
2 * 108 ms-1
C.
3 * 107 ms-1
D.
3 * 106 ms-1
Ans:
3 * 108 ms-1
Explanation :
The speed of light in a vacuum is 186,282 miles per second that corresponds to about 3 * 108 ms-1.
[3] Why does a black board appears black in color?
A.
It reflects black color
B.
It absorbs black color
C.
It reflects all colors
D.
It absorbs all the colours
Ans:
It absorbs all the colours
Explanation :
When white light falls on an opaque body, it absorbs all the colors except one color which it reflects; this reflected color is the color of the body.
[4] The pitch of the sound is measured by its:
A.
Intensity
B.
waveform
C.
Frequency
D.
Loudness
Ans:
Frequency
Explanation :
Pitch relates to the frequency, or how many times a second the particles vibrate. The distance between one wave and the next gives the wavelength. For sounds all travelling at the same speed, high- frequency (high-pitched) sounds have waves very close together.
[5] Intensity of sound has -
A.
an object existence
B.
a subject existence
C.
no existence
D.
both subjective and objective existence
Ans:
an object existence
Explanation :
Intensity of sound has an object existence. Sound intensity is defined as the sound power per unit area.
[6] The south pole of the earth’s magnet is near the geographical .
A.
south
B.
east
C.
west
D.
north
Ans:
north
Explanation :
The South Pole of the Earth's magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. Thus, there is a magnetic S-pole near the geographical North, and a magnetic N-pole near the geographical South
[7] Which among the following determines the pitch of a sound?
A.
Amplitude
B.
Frequency
C.
Loudness
D.
Wavelength
Ans:
Frequency
Explanation :
The pitch of a sound is determined by the frequency of vibration of the sound waves So higher the frequency the higher is the pitch.
[8] Ozone layer above the surface of Earth provides a shield against –
A.
X-rays
B.
Ultra-violet rays
C.
Gamma rays
D.
Infra-red rays
Ans:
Ultra-violet rays
Explanation :
The Ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth.
[9] The Newton's First Law is also called as –
A.
Law of moments
B.
Law of inertia
C.
Law of energy
D.
Law of momentum
Ans:
Law of inertia
Explanation :
According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.
[10] Fat can be separated from milk in a cream separator because of _.
A.
cohesive force
B.
gravitational force
C.
centripetal force
D.
centrifugal force
Ans:
centrifugal force
Explanation :
The centrifugal separator was invented in 1897. By the turn of the century it had altered the dairy industry by making centralized dairy processing possible for the first time.
[11] A charge of 2C passes from one point to the other in a circuit. If the potential difference between the two points is 5V, the amount of work done is :
A.
10 J
B.
0.4 J
C.
2.5 J
D.
5 J
Ans:
10 J
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
In electricity, R stands for resistance, the property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current.
[2] The velocity of light in vacuum is :
A.
3 * 108 ms-1
B.
2 * 108 ms-1
C.
3 * 107 ms-1
D.
3 * 106 ms-1
Ans:
3 * 108 ms-1
Explanation :
The speed of light in a vacuum is 186,282 miles per second that corresponds to about 3 * 108 ms-1.
[3] Why does a black board appears black in color?
A.
It reflects black color
B.
It absorbs black color
C.
It reflects all colors
D.
It absorbs all the colours
Ans:
It absorbs all the colours
Explanation :
When white light falls on an opaque body, it absorbs all the colors except one color which it reflects; this reflected color is the color of the body.
[4] The pitch of the sound is measured by its:
A.
Intensity
B.
waveform
C.
Frequency
D.
Loudness
Ans:
Frequency
Explanation :
Pitch relates to the frequency, or how many times a second the particles vibrate. The distance between one wave and the next gives the wavelength. For sounds all travelling at the same speed, high- frequency (high-pitched) sounds have waves very close together.
[5] Intensity of sound has -
A.
an object existence
B.
a subject existence
C.
no existence
D.
both subjective and objective existence
Ans:
an object existence
Explanation :
Intensity of sound has an object existence. Sound intensity is defined as the sound power per unit area.
[6] The south pole of the earth’s magnet is near the geographical .
A.
south
B.
east
C.
west
D.
north
Ans:
north
Explanation :
The South Pole of the Earth's magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. Thus, there is a magnetic S-pole near the geographical North, and a magnetic N-pole near the geographical South
[7] Which among the following determines the pitch of a sound?
A.
Amplitude
B.
Frequency
C.
Loudness
D.
Wavelength
Ans:
Frequency
Explanation :
The pitch of a sound is determined by the frequency of vibration of the sound waves So higher the frequency the higher is the pitch.
[8] Ozone layer above the surface of Earth provides a shield against –
A.
X-rays
B.
Ultra-violet rays
C.
Gamma rays
D.
Infra-red rays
Ans:
Ultra-violet rays
Explanation :
The Ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth.
[9] The Newton's First Law is also called as –
A.
Law of moments
B.
Law of inertia
C.
Law of energy
D.
Law of momentum
Ans:
Law of inertia
Explanation :
According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.
[10] Fat can be separated from milk in a cream separator because of _.
A.
cohesive force
B.
gravitational force
C.
centripetal force
D.
centrifugal force
Ans:
centrifugal force
Explanation :
The centrifugal separator was invented in 1897. By the turn of the century it had altered the dairy industry by making centralized dairy processing possible for the first time.
[11] A charge of 2C passes from one point to the other in a circuit. If the potential difference between the two points is 5V, the amount of work done is :
A.
10 J
B.
0.4 J
C.
2.5 J
D.
5 J
Ans:
10 J
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
When white light falls on an opaque body, it absorbs all the colors except one color which it reflects; this reflected color is the color of the body.
[4] The pitch of the sound is measured by its:
A.
Intensity
B.
waveform
C.
Frequency
D.
Loudness
Ans:
Frequency
Explanation :
Pitch relates to the frequency, or how many times a second the particles vibrate. The distance between one wave and the next gives the wavelength. For sounds all travelling at the same speed, high- frequency (high-pitched) sounds have waves very close together.
[5] Intensity of sound has -
A.
an object existence
B.
a subject existence
C.
no existence
D.
both subjective and objective existence
Ans:
an object existence
Explanation :
Intensity of sound has an object existence. Sound intensity is defined as the sound power per unit area.
[6] The south pole of the earth’s magnet is near the geographical .
A.
south
B.
east
C.
west
D.
north
Ans:
north
Explanation :
The South Pole of the Earth's magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. Thus, there is a magnetic S-pole near the geographical North, and a magnetic N-pole near the geographical South
[7] Which among the following determines the pitch of a sound?
A.
Amplitude
B.
Frequency
C.
Loudness
D.
Wavelength
Ans:
Frequency
Explanation :
The pitch of a sound is determined by the frequency of vibration of the sound waves So higher the frequency the higher is the pitch.
[8] Ozone layer above the surface of Earth provides a shield against –
A.
X-rays
B.
Ultra-violet rays
C.
Gamma rays
D.
Infra-red rays
Ans:
Ultra-violet rays
Explanation :
The Ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth.
[9] The Newton's First Law is also called as –
A.
Law of moments
B.
Law of inertia
C.
Law of energy
D.
Law of momentum
Ans:
Law of inertia
Explanation :
According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.
[10] Fat can be separated from milk in a cream separator because of _.
A.
cohesive force
B.
gravitational force
C.
centripetal force
D.
centrifugal force
Ans:
centrifugal force
Explanation :
The centrifugal separator was invented in 1897. By the turn of the century it had altered the dairy industry by making centralized dairy processing possible for the first time.
[11] A charge of 2C passes from one point to the other in a circuit. If the potential difference between the two points is 5V, the amount of work done is :
A.
10 J
B.
0.4 J
C.
2.5 J
D.
5 J
Ans:
10 J
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
Intensity of sound has an object existence. Sound intensity is defined as the sound power per unit area.
[6] The south pole of the earth’s magnet is near the geographical .
A.
south
B.
east
C.
west
D.
north
Ans:
north
Explanation :
The South Pole of the Earth's magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. Thus, there is a magnetic S-pole near the geographical North, and a magnetic N-pole near the geographical South
[7] Which among the following determines the pitch of a sound?
A.
Amplitude
B.
Frequency
C.
Loudness
D.
Wavelength
Ans:
Frequency
Explanation :
The pitch of a sound is determined by the frequency of vibration of the sound waves So higher the frequency the higher is the pitch.
[8] Ozone layer above the surface of Earth provides a shield against –
A.
X-rays
B.
Ultra-violet rays
C.
Gamma rays
D.
Infra-red rays
Ans:
Ultra-violet rays
Explanation :
The Ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth.
[9] The Newton's First Law is also called as –
A.
Law of moments
B.
Law of inertia
C.
Law of energy
D.
Law of momentum
Ans:
Law of inertia
Explanation :
According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.
[10] Fat can be separated from milk in a cream separator because of _.
A.
cohesive force
B.
gravitational force
C.
centripetal force
D.
centrifugal force
Ans:
centrifugal force
Explanation :
The centrifugal separator was invented in 1897. By the turn of the century it had altered the dairy industry by making centralized dairy processing possible for the first time.
[11] A charge of 2C passes from one point to the other in a circuit. If the potential difference between the two points is 5V, the amount of work done is :
A.
10 J
B.
0.4 J
C.
2.5 J
D.
5 J
Ans:
10 J
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
The pitch of a sound is determined by the frequency of vibration of the sound waves So higher the frequency the higher is the pitch.
[8] Ozone layer above the surface of Earth provides a shield against –
A.
X-rays
B.
Ultra-violet rays
C.
Gamma rays
D.
Infra-red rays
Ans:
Ultra-violet rays
Explanation :
The Ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth.
[9] The Newton's First Law is also called as –
A.
Law of moments
B.
Law of inertia
C.
Law of energy
D.
Law of momentum
Ans:
Law of inertia
Explanation :
According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.
[10] Fat can be separated from milk in a cream separator because of _.
A.
cohesive force
B.
gravitational force
C.
centripetal force
D.
centrifugal force
Ans:
centrifugal force
Explanation :
The centrifugal separator was invented in 1897. By the turn of the century it had altered the dairy industry by making centralized dairy processing possible for the first time.
[11] A charge of 2C passes from one point to the other in a circuit. If the potential difference between the two points is 5V, the amount of work done is :
A.
10 J
B.
0.4 J
C.
2.5 J
D.
5 J
Ans:
10 J
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.
[10] Fat can be separated from milk in a cream separator because of _.
A.
cohesive force
B.
gravitational force
C.
centripetal force
D.
centrifugal force
Ans:
centrifugal force
Explanation :
The centrifugal separator was invented in 1897. By the turn of the century it had altered the dairy industry by making centralized dairy processing possible for the first time.
[11] A charge of 2C passes from one point to the other in a circuit. If the potential difference between the two points is 5V, the amount of work done is :
A.
10 J
B.
0.4 J
C.
2.5 J
D.
5 J
Ans:
10 J
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
Work done #NAME? = 2 * 5 = 10 J
[12] The large collection of Stars, dust and gas held together by gravitational attraction between components is known as
A.
Cluster
B.
Atmosphere
C.
Galaxy
D.
Sun Family
Ans:
Galaxy
Explanation :
The term galaxy refers to a large collection of stars, dust, and gas clouds which are held together by gravitational attraction.
[13] An amplifier is said to suffer from distortion when its output is -
A.
low
B.
different from input
C.
noisy
D.
larger than its input
Ans:
noisy
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
Amplifier Distortion can take on many forms such as Amplitude, Frequency and Phase Distortion due to Clipping. For a signal amplifier to operate correctly without any distortion to the output signal, it requires some form of DC Bias on its Base or Gate terminal.
[14] While catching a ball, a player pulls down his hands to lower the -
A.
force/cy
B.
momentum
C.
impulse
D.
catching time
Ans:
momentum
Explanation :
A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object. For example, a heavy truck moving fast has a large momentum—it takes a large and prolonged force to get the truck up to this speed, and it takes a large and prolonged force to bring it to a stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.
[15] Optical fibres are mainly used in -
A.
Communication
B.
Weaving
C.
Musical Instruments
D.
Food Industry
Ans:
Communication
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
Optical Fibres used for Broadcasting. These cables are used to transmit high definition television signals which have a greater bandwidth and speed.
[16] Radiocarbon dating technique is used to estimate the age of -
A.
rocks
B.
monuments
C.
soil
D.
fossils
Ans:
fossils
Explanation :
Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
[17] 'Parsec' is the unit measurement of -
A.
Density of stars
B.
Astronomical distance
C.
Brightness of heavenly bodies
D.
Orbital velocity of giant stars
Ans:
Astronomical distance
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
[18] Receptors used to detect taste are known as -
A.
Gustatory receptors
B.
Olfactory receptors
C.
Nerve cell receptors
D.
All of the above
Ans:
Gustatory receptors
Explanation :
Gustatory receptors detect taste while olfactory receptors detect smell. Nerve cell receptors detect temperature etc.
[19] Tesla is a unit of magnetic –
A.
flux
B.
induction
C.
moment
D.
field
Ans:
field
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
The tesla (symbol T) is the SI derived unit used to measure magnetic fields. Testa can be measured in different ways; for example, one tesla is equal to one Weber per square meter. The tesla was first defined in 1960 by the General Conference on Weights and Measures (CGPM). It was named in honor of the physicist electrical engineer, and inventor, Nikola Tesla.
[20] The damage of the human body due to radiation (X-rays or y-rays etc,) is measured in –
A.
Rems
B.
Roentgen
C.
Curie
D.
Rads
Ans:
Rems
Explanation :
In the case of damage to human body due to radiation, the most important factor is the amount of the dose - the amount of energy actually deposited in the body. The absorbed radiation dose, the amount of energy absorbed per gram of body tissue, is usually measured in units called rads. Another unit of radation is the rem, or roentgen equivalent in man. For practical purposes, 1 rad (absorbed dose) = 1 rem or 1000 mrem (dose equivalent) (Source: United States Nuclear Regulatory Commission).
[21] Golden view of sea shell is due to -
A.
Diffraction
B.
Dispersion
C.
Polarization
D.
Reflection
Ans:
Polarization
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
[22] An object covers distance which is directly proportional to the square of the time. Its acceleration is –
A.
increasing
B.
decreasing
C.
zero
D.
constant
Ans:
constant
Explanation :
When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
[23] What is impulse equal to?
A.
Change in momentum
B.
Change in force
C.
Change in velocity
D.
Change in acceleration
Ans:
Change in momentum
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
Impulse is a quantity that describes the effect of a net force acting on an object. The impulse- momentum theorem states that the change in momentum of an object equals the impulse applied to it.
[24] The person suffering from “myopia” cannot see the objects at:
A.
Near distance
B.
Longer distance
C.
any distance
D.
Close to eye
Ans:
Longer distance
Explanation :
Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.
[25] Which one of the following is a non-dimensional quantity?
A.
Gas constant
B.
Strain
C.
Co-efficient of viscosity
D.
Plank's constant
Ans:
Strain
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.
Explanation :
A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. Strain which is defined as change in dimension over original dimension has no dimensional formula. So it is a dimensionless quantity.