Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Physical World. In this article, we will provide 50+ MCQ questions on the Physical World, along with detailed solutions to help you prepare for the JEE Mains exam.
These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Physical World JEE Mains MCQ Questions with Answers.
Physical World JEE Mains MCQ
Which of the following is NOT a fundamental unit in the International System of Units (SI)? A) Meter (m) B) Kilogram (kg) C) Second (s) D) Degree Celsius (°C)
Solution:
D) Degree Celsius (°C)
Explanation: The International System of Units (SI) recognizes three fundamental units for temperature: Kelvin (K), Ampere (A), and Candela (cd). The degree Celsius (°C) is a derived unit of temperature.
Which of the following statements is correct? A) Mass and weight are the same. B) Mass is a measure of the amount of matter, whereas weight is a measure of the force exerted by gravity on an object. C) Mass and weight both measure the force exerted by gravity on an object. D) Mass and weight are unrelated concepts in physics.
Solution:
B) Mass is a measure of the amount of matter, whereas weight is a measure of the force exerted by gravity on an object.
Explanation: Mass is a fundamental property of matter and is independent of gravity. Weight, on the other hand, is the force exerted by gravity on an object and depends on the mass and the acceleration due to gravity.
Which of the following quantities is a scalar quantity? A) Velocity B) Displacement C) Force D) Temperature
Solution:
D) Temperature
Explanation: Scalar quantities have magnitude only and do not have a specific direction. Temperature is a scalar quantity as it represents the hotness or coldness of an object and does not have a direction associated with it.
The wavelength of light in vacuum is given by λ = c/v, where λ is the wavelength, c is the speed of light in vacuum, and v is the frequency of the light. If the frequency of light is doubled, what happens to the wavelength? A) It is halved B) It is doubled C) It remains the same D) It becomes four times
Solution:
A) It is halved
Explanation: According to the formula λ = c/v, if the frequency (v) is doubled, the wavelength (λ) is halved. This is because the speed of light (c) is constant, and the product of wavelength and frequency should always be equal to the speed of light.
A car travels a distance of 200 meters in 10 seconds. What is its average speed? A) 20 m/s B) 10 m/s C) 2 m/s D) 100 m/s
Solution:
B) 10 m/s
Explanation: Average speed is calculated by dividing the total distance traveled by the total time taken. In this case, average speed = total distance / total time = 200 m / 10 s = 20 m/s.
Which of the following is an example of a vector quantity? A) Distance B) Speed C) Time D) Displacement
Solution:
D) Displacement
Explanation: Displacement is a vector quantity as it has both magnitude (the length of the shortest path between two points) and direction. Distance, speed, and time are scalar quantities.
The gravitational force between two objects depends on which of the following factors? A) Mass of the objects only B) Distance between the objects only C) Mass of the objects and distance between them D) Velocity of the objects
Solution:
C) Mass of the objects and distance between them
Explanation: The gravitational force between two objects depends on the mass of the objects and the distance between them. The force is directly proportional to the product of the masses and inversely proportional to the square of the distance between their centers.
Which of the following is true about the conservation of energy? A) Energy can be created but not destroyed. B) Energy can be destroyed but not created. C) Energy can be neither created nor destroyed, only transformed from one form to another. D) Energy can be created and destroyed freely.
Solution:
C) Energy can be neither created nor destroyed, only transformed from one form to another.
Explanation: According to the law of conservation of energy, the total energy of an isolated system remains constant over time. Energy can change from one form to another (e.g., potential energy to kinetic energy), but the total energy within the system remains constant.
Which of the following statements accurately describes the concept of inertia? A) Inertia is the tendency of an object to resist changes in its state of motion. B) Inertia is the force that causes objects to move in circular paths. C) Inertia is the measure of the gravitational force acting on an object. D) Inertia is the force that opposes the motion of an object through a fluid.
Solution:
A) Inertia is the tendency of an object to resist changes in its state of motion.
Explanation: Inertia refers to an object’s resistance to changes in its velocity or state of motion. It is one of Newton’s laws of motion and is directly related to an object’s mass.
Which of the following electromagnetic waves has the highest frequency? A) Radio waves B) Microwaves C) Visible light D) X-rays
Solution:
D) X-rays
Explanation: The electromagnetic spectrum is arranged in order of increasing frequency. X-rays have higher frequencies compared to visible light, microwaves, and radio waves. Therefore, X-rays have the highest frequency among the options listed.
When a glass rod is rubbed with a silk cloth, the glass rod becomes positively charged because: A) Electrons from the glass rod move to the silk cloth. B) Protons from the glass rod move to the silk cloth. C) Electrons from the silk cloth move to the glass rod. D) Protons from the silk cloth move to the glass rod.
Solution:
C) Electrons from the silk cloth move to the glass rod.
Explanation: When a glass rod is rubbed with a silk cloth, electrons are transferred from the silk cloth to the glass rod. As a result, the glass rod gains a net positive charge, while the silk cloth gains a net negative charge.
Which of the following is an example of periodic motion? A) A stone thrown upward B) A car moving along a straight road at a constant speed C) A pendulum swinging back and forth D) Water flowing in a river
Solution:
C) A pendulum swinging back and forth
Explanation: Periodic motion refers to motion that repeats itself after a regular interval of time. A pendulum swinging back and forth is an example of periodic motion as it oscillates between two extreme points in a regular and repetitive manner.
Which of the following physical quantities is dimensionless? A) Momentum B) Energy C) Power D) Specific heat capacity
Solution:
D) Specific heat capacity
Explanation: Specific heat capacity is defined as the amount of heat required to raise the temperature of a substance per unit mass. It is expressed in units of J/kg·K and is not dimensionless. Momentum, energy, and power all have specific units associated with them.
The wavelength of a particle with mass m and velocity v is given by: A) λ = mv B) λ = h/mv C) λ = hv/m D) λ = h/mv^2
Solution:
B) λ = h/mv
Explanation: According to de Broglie’s equation, the wavelength (λ) of a particle is given by λ = h/mv, where h is Planck’s constant, m is the mass of the particle, and v is its velocity.
The time period of a simple pendulum depends on: A) The mass of the pendulum bob only B) The length of the pendulum only C) The amplitude of the pendulum swing only D) Both the length of the pendulum and acceleration due to gravity
Solution:
B) The length of the pendulum only
Explanation: The time period of a simple pendulum is directly proportional to the square root of its length and is independent of the mass of the pendulum bob, the amplitude of the swing, or the acceleration due to gravity.
According to the principle of conservation of momentum, in the absence of external forces: A) The total momentum of a system remains constant. B) The total kinetic energy of a system remains constant. C) The total potential energy of a system remains constant. D) The total mechanical energy of a system remains constant.
Solution:
A) The total momentum of a system remains constant.
Explanation: The principle of conservation of momentum states that in an isolated system, the total momentum before an event is equal to the total momentum after the event, provided there are no external forces acting on the system. This principle applies to both elastic and inelastic collisions.
The phenomenon of total internal reflection occurs when: A) Light travels from a medium of higher refractive index to a medium of lower refractive index. B) Light travels from a medium of lower refractive index to a medium of higher refractive index. C) Light travels from a denser medium to a less dense medium. D) Light travels from a less dense medium to a denser medium.
Solution:
A) Light travels from a medium of higher refractive index to a medium of lower refractive index.
Explanation: Total internal reflection occurs when light travels from a medium of higher refractive index to a medium of lower refractive index and the angle of incidence exceeds the critical angle for that interface. This phenomenon is commonly observed in optical fibers and prisms.
Which of the following statements about electric potential is correct? A) Electric potential is a vector quantity. B) Electric potential depends on the test charge used. C) Electric potential is directly proportional to the electric field. D) Electric potential is the work done in bringing a positive test charge from infinity to a point in an electric field.
Solution:
D) Electric potential is the work done in bringing a positive test charge from infinity to a point in an electric field.
Explanation: Electric potential is a scalar quantity and is defined as the work done per unit charge in bringing a positive test charge from infinity to a specific point in an electric field. It is independent of the test charge and is related to the electric field by the equation V = W/q, where V is the electric potential, W is the work done, and q is the test charge.
The ratio of the speed of light in a medium to the speed of light in a vacuum is called: A) Refractive index B) Reflectivity C) Transmissivity D) Absorptivity
Solution:
A) Refractive index
Explanation: The refractive index of a medium is defined as the ratio of the speed of light in that medium to the speed of light in a vacuum. It is a dimensionless quantity and determines how much the light is bent or refracted when it passes from one medium to another.
Which of the following phenomena is explained by both the particle and wave nature of light? A) Photoelectric effect B) Diffraction C) Interference D) Polarization
Solution:
B) Diffraction
Explanation: Diffraction is a phenomenon observed when waves encounter an obstacle or pass through a narrow opening. It can be explained by both the particle nature (as light waves bend around obstacles) and the wave nature (as light waves interfere constructively and destructively) of light. The photoelectric effect, interference, and polarization can be explained by the wave nature of light.
Which of the following physical quantities is conserved in a completely elastic collision between two particles? A) Momentum B) Kinetic energy C) Potential energy D) Angular momentum
Solution:
A) Momentum
Explanation: In a completely elastic collision, both momentum and kinetic energy are conserved. However, momentum is always conserved in any collision, regardless of whether it is elastic or inelastic.
A ball is thrown vertically upward. At the highest point in its trajectory, which of the following quantities is maximum? A) Velocity B) Acceleration C) Kinetic energy D) Potential energy
Solution:
B) Acceleration
Explanation: At the highest point in the ball’s trajectory, its velocity is momentarily zero, so it is not maximum. Both kinetic and potential energies are dependent on velocity, so they are also not maximum. The only quantity that is maximum at the highest point is the acceleration due to gravity acting downward.
Which of the following statements is true about the photoelectric effect? A) Increasing the intensity of light increases the kinetic energy of emitted electrons. B) Increasing the frequency of light increases the number of emitted electrons. C) Increasing the intensity of light increases the frequency of emitted photons. D) Increasing the frequency of light increases the maximum kinetic energy of emitted electrons.
Solution:
D) Increasing the frequency of light increases the maximum kinetic energy of emitted electrons.
Explanation: In the photoelectric effect, the maximum kinetic energy of emitted electrons is directly proportional to the frequency of incident light. Increasing the intensity of light affects the number of emitted electrons but not their kinetic energy.
Which of the following statements best describes the concept of entropy in thermodynamics? A) Entropy is a measure of the heat content of a system. B) Entropy is a measure of the disorder or randomness of a system. C) Entropy is a measure of the work done by a system. D) Entropy is a measure of the internal energy of a system.
Solution:
B) Entropy is a measure of the disorder or randomness of a system.
Explanation: Entropy is a thermodynamic quantity that quantifies the level of disorder or randomness in a system. It is related to the number of possible microscopic configurations of a system.
The rate of radioactive decay of a substance is usually expressed in terms of its: A) Mass B) Volume C) Half-life D) Atomic number
Solution:
C) Half-life
Explanation: The rate of radioactive decay of a substance is commonly expressed in terms of its half-life, which is the time it takes for half of the radioactive material to decay. Half-life is a characteristic property of each radioactive substance.
Which of the following is NOT a fundamental unit in the International System of Units (SI)? A) Meter (m) B) Kilogram (kg) C) Second (s) D) Degree Celsius (°C)
Solution:
D) Degree Celsius (°C)
Explanation: The International System of Units (SI) recognizes three fundamental units for temperature: Kelvin (K), Ampere (A), and Candela (cd). The degree Celsius (°C) is a derived unit of temperature.
Which of the following statements is correct? A) Mass and weight are the same. B) Mass is a measure of the amount of matter, whereas weight is a measure of the force exerted by gravity on an object. C) Mass and weight both measure the force exerted by gravity on an object. D) Mass and weight are unrelated concepts in physics.
Solution:
B) Mass is a measure of the amount of matter, whereas weight is a measure of the force exerted by gravity on an object.
Explanation: Mass is a fundamental property of matter and is independent of gravity. Weight, on the other hand, is the force exerted by gravity on an object and depends on the mass and the acceleration due to gravity.
Which of the following quantities is a scalar quantity? A) Velocity B) Displacement C) Force D) Temperature
Solution:
D) Temperature
Explanation: Scalar quantities have magnitude only and do not have a specific direction. Temperature is a scalar quantity as it represents the hotness or coldness of an object and does not have a direction associated with it.
The wavelength of light in vacuum is given by λ = c/v, where λ is the wavelength, c is the speed of light in vacuum, and v is the frequency of the light. If the frequency of light is doubled, what happens to the wavelength? A) It is halved B) It is doubled C) It remains the same D) It becomes four times
Solution:
A) It is halved
Explanation: According to the formula λ = c/v, if the frequency (v) is doubled, the wavelength (λ) is halved. This is because the speed of light (c) is constant, and the product of wavelength and frequency should always be equal to the speed of light.
A car travels a distance of 200 meters in 10 seconds. What is its average speed? A) 20 m/s B) 10 m/s C) 2 m/s D) 100 m/s
Solution:
B) 10 m/s
Explanation: Average speed is calculated by dividing the total distance traveled by the total time taken. In this case, average speed = total distance / total time = 200 m / 10 s = 20 m/s.
Which of the following is an example of a vector quantity? A) Distance B) Speed C) Time D) Displacement
Solution:
D) Displacement
Explanation: Displacement is a vector quantity as it has both magnitude (the length of the shortest path between two points) and direction. Distance, speed, and time are scalar quantities.
The gravitational force between two objects depends on which of the following factors? A) Mass of the objects only B) Distance between the objects only C) Mass of the objects and distance between them D) Velocity of the objects
Solution:
C) Mass of the objects and distance between them
Explanation: The gravitational force between two objects depends on the mass of the objects and the distance between them. The force is directly proportional to the product of the masses and inversely proportional to the square of the distance between their centers.
Which of the following is true about the conservation of energy? A) Energy can be created but not destroyed. B) Energy can be destroyed but not created. C) Energy can be neither created nor destroyed, only transformed from one form to another. D) Energy can be created and destroyed freely.
Solution:
C) Energy can be neither created nor destroyed, only transformed from one form to another.
Explanation: According to the law of conservation of energy, the total energy of an isolated system remains constant over time. Energy can change from one form to another (e.g., potential energy to kinetic energy), but the total energy within the system remains constant.
Which of the following statements accurately describes the concept of inertia? A) Inertia is the tendency of an object to resist changes in its state of motion. B) Inertia is the force that causes objects to move in circular paths. C) Inertia is the measure of the gravitational force acting on an object. D) Inertia is the force that opposes the motion of an object through a fluid.
Solution:
A) Inertia is the tendency of an object to resist changes in its state of motion.
Explanation: Inertia refers to an object’s resistance to changes in its velocity or state of motion. It is one of Newton’s laws of motion and is directly related to an object’s mass.
Which of the following electromagnetic waves has the highest frequency? A) Radio waves B) Microwaves C) Visible light D) X-rays
Solution:
D) X-rays
Explanation: The electromagnetic spectrum is arranged in order of increasing frequency. X-rays have higher frequencies compared to visible light, microwaves, and radio waves. Therefore, X-rays have the highest frequency among the options listed.
When a glass rod is rubbed with a silk cloth, the glass rod becomes positively charged because: A) Electrons from the glass rod move to the silk cloth. B) Protons from the glass rod move to the silk cloth. C) Electrons from the silk cloth move to the glass rod. D) Protons from the silk cloth move to the glass rod.
.
Solution:
C) Electrons from the silk cloth move to the glass rod.
Explanation: When a glass rod is rubbed with a silk cloth, electrons are transferred from the silk cloth to the glass rod. As a result, the glass rod gains a net positive charge, while the silk cloth gains a net negative charge
Which of the following is an example of periodic motion? A) A stone thrown upward B) A car moving along a straight road at a constant speed C) A pendulum swinging back and forth D) Water flowing in a river
Solution:
C) A pendulum swinging back and forth
Explanation: Periodic motion refers to motion that repeats itself after a regular interval of time. A pendulum swinging back and forth is an example of periodic motion as it oscillates between two extreme points in a regular and repetitive manner.
Which of the following physical quantities is dimensionless? A) Momentum B) Energy C) Power D) Specific heat capacity
Solution:
D) Specific heat capacity
Explanation: Specific heat capacity is defined as the amount of heat required to raise the temperature of a substance per unit mass. It is expressed in units of J/kg·K and is not dimensionless. Momentum, energy, and power all have specific units associated with them.
The wavelength of a particle with mass m and velocity v is given by: A) λ = mv B) λ = h/mv C) λ = hv/m D) λ = h/mv^2
Solution:
B) λ = h/mv
Explanation: According to de Broglie’s equation, the wavelength (λ) of a particle is given by λ = h/mv, where h is Planck’s constant, m is the mass of the particle, and v is its velocity.
The time period of a simple pendulum depends on: A) The mass of the pendulum bob only B) The length of the pendulum only C) The amplitude of the pendulum swing only D) Both the length of the pendulum and acceleration due to gravity
Solution:
B) The length of the pendulum only
Explanation: The time period of a simple pendulum is directly proportional to the square root of its length and is independent of the mass of the pendulum bob, the amplitude of the swing, or the acceleration due to gravity.
According to the principle of conservation of momentum, in the absence of external forces: A) The total momentum of a system remains constant. B) The total kinetic energy of a system remains constant. C) The total potential energy of a system remains constant. D) The total mechanical energy of a system remains constant.
Solution:
A) The total momentum of a system remains constant.
Explanation: The principle of conservation of momentum states that in an isolated system, the total momentum before an event is equal to the total momentum after the event, provided there are no external forces acting on the system. This principle applies to both elastic and inelastic collisions.
The phenomenon of total internal reflection occurs when: A) Light travels from a medium of higher refractive index to a medium of lower refractive index. B) Light travels from a medium of lower refractive index to a medium of higher refractive index. C) Light travels from a denser medium to a less dense medium. D) Light travels from a less dense medium to a denser medium.
Solution:
A) Light travels from a medium of higher refractive index to a medium of lower refractive index.
Explanation: Total internal reflection occurs when light travels from a medium of higher refractive index to a medium of lower refractive index and the angle of incidence exceeds the critical angle for that interface. This phenomenon is commonly observed in optical fibers and prisms.
Which of the following statements about electric potential is correct? A) Electric potential is a vector quantity. B) Electric potential depends on the test charge used. C) Electric potential is directly proportional to the electric field. D) Electric potential is the work done in bringing a positive test charge from infinity to a point in an electric field.
Solution:
D) Electric potential is the work done in bringing a positive test charge from infinity to a point in an electric field.
Explanation: Electric potential is a scalar quantity and is defined as the work done per unit charge in bringing a positive test charge from infinity to a specific point in an electric field. It is independent of the test charge and is related to the electric field by the equation V = W/q, where V is the electric potential, W is the work done, and q is the test charge.
The ratio of the speed of light in a medium to the speed of light in a vacuum is called: A) Refractive index B) Reflectivity C) Transmissivity D) Absorptivity
Solution:
A) Refractive index
Explanation: The refractive index of a medium is defined as the ratio of the speed of light in that medium to the speed of light in a vacuum. It is a dimensionless quantity and determines how much the light is bent or refracted when it passes from one medium to another.
Which of the following phenomena is explained by both the particle and wave nature of light? A) Photoelectric effect B) Diffraction C) Interference D) Polarization
Solution:
B) Diffraction
Explanation: Diffraction is a phenomenon observed when waves encounter an obstacle or pass through a narrow opening. It can be explained by both the particle nature (as light waves bend around obstacles) and the wave nature (as light waves interfere constructively and destructively) of light. The photoelectric effect, interference, and polarization can be explained by the wave nature of light.
Which of the following physical quantities is conserved in a completely elastic collision between two particles? A) Momentum B) Kinetic energy C) Potential energy D) Angular momentum
Solution:
A) Momentum
Explanation: In a completely elastic collision, both momentum and kinetic energy are conserved. However, momentum is always conserved in any collision, regardless of whether it is elastic or inelastic.
A ball is thrown vertically upward. At the highest point in its trajectory, which of the following quantities is maximum? A) Velocity B) Acceleration C) Kinetic energy D) Potential energy
Solution:
B) Acceleration
Explanation: At the highest point in the ball’s trajectory, its velocity is momentarily zero, so it is not maximum. Both kinetic and potential energies are dependent on velocity, so they are also not maximum. The only quantity that is maximum at the highest point is the acceleration due to gravity acting downward.
Which of the following statements is true about the photoelectric effect? A) Increasing the intensity of light increases the kinetic energy of emitted electrons. B) Increasing the frequency of light increases the number of emitted electrons. C) Increasing the intensity of light increases the frequency of emitted photons. D) Increasing the frequency of light increases the maximum kinetic energy of emitted electrons.
Solution:
D) Increasing the frequency of light increases the maximum kinetic energy of emitted electrons.
Explanation: In the photoelectric effect, the maximum kinetic energy of emitted electrons is directly proportional to the frequency of incident light. Increasing the intensity of light affects the number of emitted electrons but not their kinetic energy.
Which of the following statements best describes the concept of entropy in thermodynamics? A) Entropy is a measure of the heat content of a system. B) Entropy is a measure of the disorder or randomness of a system. C) Entropy is a measure of the work done by a system. D) Entropy is a measure of the internal energy of a system.
Solution:
B) Entropy is a measure of the disorder or randomness of a system.
Explanation: Entropy is a thermodynamic quantity that quantifies the level of disorder or randomness in a system. It is related to the number of possible microscopic configurations of a system.
The rate of radioactive decay of a substance is usually expressed in terms of its: A) Mass B) Volume C) Half-life D) Atomic number
Solution:
C) Half-life
Explanation: The rate of radioactive decay of a substance is commonly expressed in terms of its half-life, which is the time it takes for half of the radioactive material to decay. Half-life is a characteristic property of each radioactive substance.
Which of the following phenomena is NOT explained by the wave theory of light? A) Interference B) Polarization C) Photoelectric effect D) Diffraction
Solution:
C) Photoelectric effect
Explanation: The photoelectric effect cannot be explained by the wave theory of light alone. It requires the concept of light as a particle (photon) to explain the emission of electrons when light of certain frequencies strikes a material.
The velocity of sound in a medium depends on: A) Temperature of the medium only B) Pressure of the medium only C) Density of the medium only D) Temperature, pressure, and density of the medium
Solution:
D) Temperature, pressure, and density of the medium
Explanation: The velocity of sound in a medium depends on its temperature, pressure, and density. Increase in temperature, pressure, or density can affect the speed of sound in a medium.
The phenomenon of hysteresis is commonly observed in materials exhibiting: A) Elastic behavior B) Superconductivity C) Ferromagnetism D) Semiconductivity
Solution:
C) Ferromagnetism
Explanation: Hysteresis is the phenomenon of lagging behind in response to an external force. It is commonly observed in materials exhibiting ferromagnetism, where the magnetic field lags behind changes in the external magnetic field.
The principle of superposition is applicable to which of the following phenomena? A) Reflection of light B) Refraction of light C) Diffraction of light D) Interference of light
Solution:
D) Interference of light
Explanation: The principle of superposition states that when two or more waves overlap, the resulting displacement at any point is the algebraic sum of the individual displacements. This principle is applicable to the phenomenon of interference, where two or more light waves combine to produce regions of constructive and destructive interference.
Which of the following quantities is a vector quantity? A) Power B) Energy C) Impulse D) Work
Solution:
C) Impulse
Explanation: Impulse is the change in momentum of an object, and momentum is a vector quantity. Therefore, impulse is also a vector quantity. Power, energy, and work are scalar quantities.
The velocity of sound in a medium depends on: A) Temperature of the medium only B) Pressure of the medium only C) Density of the medium only D) Temperature, pressure, and density of the medium
Solution:
D) Temperature, pressure, and density of the medium
Explanation: The velocity of sound in a medium depends on its temperature, pressure, and density. Increase in temperature, pressure, or density can affect the speed of sound in a medium.
The phenomenon of hysteresis is commonly observed in materials exhibiting: A) Elastic behavior B) Superconductivity C) Ferromagnetism D) Semiconductivity
Solution:
C) Ferromagnetism
Explanation: Hysteresis is the phenomenon of lagging behind in response to an external force. It is commonly observed in materials exhibiting ferromagnetism, where the magnetic field lags behind changes in the external magnetic field.
The principle of superposition is applicable to which of the following phenomena? A) Reflection of light B) Refraction of light C) Diffraction of light D) Interference of light
Solution:
D) Interference of light
Explanation: The principle of superposition states that when two or more waves overlap, the resulting displacement at any point is the algebraic sum of the individual displacements. This principle is applicable to the phenomenon of interference, where two or more light waves combine to produce regions of constructive and destructive interference.
Which of the following quantities is a vector quantity? A) Power B) Energy C) Impulse D) Work
Solution:
C) Impulse
Explanation: Impulse is the change in momentum of an object, and momentum is a vector quantity. Therefore, impulse is also a vector quantity. Power, energy, and work are scalar quantities.
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