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Work Power Energy Questions

Practice 31 Work Power Energy questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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31
Total Questions
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3
Easy
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23
Medium
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5
Hard
Practice by Exam:Physics(30)PHYSICS(1)

About Work Power Energy — practice questions, PYQs & concepts

Work Power Energy is a frequently-tested topic on Physics, PHYSICS. ExamTest.live currently lists 31 Work Power Energy questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Work Power Energy weight in competitive exams

Across our Work Power Energy question bank, the largest sources are Physics (30) and PHYSICS (1). Click any exam chip above to drill down to that exam-specific question set.

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  • Start easy: 3 easy Work Power Energy questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
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All Work Power Energy Questions(1–31 of 31)

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Q1mediummcqPhysicsAIEEE 20072026
0% accuracy
A block slides on a horizontal floor with a speed of . It strikes an uncompressed spring and compresses it till the block is motionless. The kinetic friction force is and the spring constant is . The spring compresses by:
Q2hardmcqPhysicsAIEEE 20062026
0% accuracy
The potential energy of a particle free to move along the -axis is given by . The total mechanical energy of the particle is . Then, the maximum speed (in m/s) is:
Q3mediummcqPhysicsAIEEE 20062026
0% accuracy
A ball of mass is thrown vertically upwards by applying a force by hand. If the hand moves while applying the force and the ball goes up to height further, find the magnitude of the force. (Consider )
Q4mediummcqPhysicsAIEEE 20062026
0% accuracy
A particle of mass is thrown vertically upwards with a speed of . The work done by the force of gravity during the time the particle goes up is:
Q5mediummcqPhysicsNEET 20192026
0% accuracy
A force acts on a particle in -direction where is in newton and in meter. Work done by this force to move the particle from to is:
Q6hardmcqPHYSICSNEET 20192026
An object of mass initially at rest is acted upon by a variable force whose -component varies with in the manner shown. The velocities of the object at the points and would have the respective values of nearly:
image
Q7hardmcqPhysicsAIEEE 20122026
If two springs and of force constants and , respectively, are stretched by the same force, it is found that more work is done on spring than on spring .Statement 1: If stretched by the same amount, work done on , will be more than that on .Statement 2: .
Q8mediummcqPhysicsAIEEE2026
A body of mass is accelerated uniformly from rest to a speed in a time . The instantaneous power delivered to the body as a function time is given by:
Q9mediummcqPhysicsAIEEE2026
The block of mass moving on the frictionless horizontal surface collides with a spring of spring constant and compresses it by length . The maximum momentum of the block after collision is:
image
Q10mediummcqPhysicsAIEEE2026
A spherical ball of mass is stationary at the top of a hill of height . It rolls down a smooth surface to the ground, then climbs up another hill of height and finally rolls down to a horizontal base at a height of above the ground. The velocity attained by the ball is:
Q11mediummcqPhysicsAIEEE2026
A bullet fired into a fixed target loses half of its velocity after penetrating . How much further it will penetrate before coming to rest assuming that it faces constant resistance to motion?
Q12mediummcqPhysicsAIEEE2026
The upper half of an inclined plane with inclination is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by:
Q13easymcqPhysicsNEET (UG) 20242026
At any instant of time , the displacement of any particle is given by (SI unit) under the influence of force of . The value of instantaneous power is (in SI unit):
Q14easymcqPhysicsNEET 20232026
The potential energy of a long spring when stretched by is . If the spring is stretched by , the potential energy stored in it will be:
Q15mediummcqPhysicsNEET 20222026
An electric lift with a maximum load of (lift + passengers) is moving up with a constant speed of . The frictional force opposing the motion is . The minimum power delivered by the motor to the lift in watts is: ()
Q16mediummcqPhysicsNEET 20212026
Water falls from a height of at the rate of to operate a turbine. The losses due to frictional force are of the input energy. How much power is generated by the turbine? ()
Q17mediummcqPhysicsNEET 20212026
A particle is released from height from the surface of the Earth. At a certain height its kinetic energy is three times its potential energy. The height from the surface of earth and the speed of the particle at that instant are respectively:
Q18mediummcqPhysicsNEET (UG) 20182026
A body initially at rest and sliding along a frictionless track from a height just completes a vertical circle of diameter . The height is equal to:
image
Q19mediummcqPhysicsNEET 20172026
Consider a drop of rain water having mass falling from a height of . It hits the ground with a speed of . Take constant with a value . The work done by the (i) gravitational force and the (ii) resistive force of air is:
Q20mediummcqPhysicsPhysics
3% accuracy
The kinetic energies of two similar cars A and B are and respectively. On applying breaks, car A stops after and car B stops after . If and are the forces applied by the breaks on cars A and B, respectively, then the ratio is:
Q21mediummcqPhysicsPhysics
0% accuracy
Force on a particle moving in a straight line varies with distance as shown in the figure. The work done on the particle during its displacement of is:
image
Q22mediummcqPhysicsPhysics
0% accuracy
The potential energy of a system increases if work is done:
Q23mediummcqPhysicsPhysics
0% accuracy
A body projected vertically from the earth reaches a height equal to the earth's radius before returning to the earth. The power exerted by the gravitational force is greatest:
Q24easymcqPhysicsPhysics
A particle moves from a point to when a force of is applied. How much work has been done by the force?
Q25hardmcqPhysicsPhysics
A bullet of mass moving horizontally with a velocity of strikes a wooden block of mass which is suspended by a light inextensible string of length . As a result the centre of gravity of the block is found to rise a vertical distance of . The speed of the bullet after it emerges out horizontally from the block will be:
Q26mediummcqPhysicsPhysics
A particle of mass moves along a circle of radius with a constant tangential acceleration. What is the magnitude of this acceleration if the kinetic energy of the particle becomes equal to by the end of the second revolution after the beginning of the motion?
Q27mediummcqPhysicsPhysics
A body of mass begins to move under the action of a time dependent force , where and are unit vectors along and axis. What power will be developed by the force at the time ?
Q28mediummcqPhysicsPhysics
A solid cylinder of mass is rolling on a horizontal surface with velocity . It collides with a horizontal spring of force constant . The maximum compression produced in the spring will be:
Q29mediummcqPhysicsPhysics
An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of . The mass per unit length of water in the pipe is . What is the power of the engine?
Q30hardmcqPhysicsPhysics
An engine pumps water continuously through a hose. Water leaves the hose with a velocity and is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water?
Q31mediummcqPhysicsPhysics
Water falls from a height of at the rate of to operate a turbine. The losses due to frictional forces are of the energy. How much power is generated by the turbine? (Take )

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