CBSE Class 11 Work Energy and Power Worksheet Set 01

Official Class 11 Physics Worksheets: Chapter 05 Work Energy and Power

Access printable practice worksheets for Chapter 05 Work Energy and Power designed to align with the 2026-27 academic syllabus for Class 11 Physics. These structured exercises help students evaluate their conceptual understanding and improve exam readiness.

Chapter-wise Practice Material: Chapter 05 Work Energy and Power

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Work Energy and Power MCQ Questions with Answers Class 11 Physics Chapter 6

 

Question- A ball of mass 5 kg experiences a force F = 2 x2 + x. Work done in displacing the ball by 2 m is
(a) 22/3 J
(b) 44/3 J
(c) 32/3 J
(d) 16/3 J
Ans-(a)
 
Question- A body is under the action of two equal and opposite forces,each of 3 N. The body is displaced by 2m. The work done is :
(a) + 6 J
(b) – 6 J
(c) 0
(d) none of the above
Ans-(c)
 
Question- Under the action of a force, a 2 kg body moves such that its position x as a function of time t is given by x =t3/3 , where x is in metre and t in second. The work done by the force in the first two seconds is :
(a) 1600 J
(b) 160 J
(c) 16 J
(d) 1.6 J
Ans-(c)
 
Question- A particle moves along the x-axis from x = 0 to x = 5 m under the influence of a force given by F = 7 – 2x + 3x2. Work done in the process is :
(a) 70
(b) 270
(c) 35
(d) 135
Ans-(d)
 
Question- A box is dragged across a floor by a rope which makes an angle of 45° with the horizontal. The tension in the rope is 100 N while the box is dragged 10 m. The work done is :
(a) 607.1 J
(b) 707.1 J
(c) 1414.2 J
(d) 900 J
Ans-(b)
 
Question- A horizonal force F pulls a 10 kg carton across the floor at a constant speed. If the coefficient of sliding friction between carton and floor is 0.50, the work done by F in moving the carton through 5 m is :
(a) 196 J
(b) 210.5 J
(c) 245 J
(d) 254 J
Ans-(c)
 
Question- What average force is necessary to stop a bullet of mass 20 gm and speed 250 m/sec as it penetrates wood to a distance of 12 cm :
(a) 3.4 × 103 newton
(b) 5.2 × 103 newton
(c) 4.0 × 103 newton
(d) 3.6 × 103 newton
Ans-(b)
 
Question- How much work must be done by a force on 50 kg body in order to accelerate it from rest to 20 m/s in 10 s ?
(a) 103 J
(b) 104 J
(c) 2 × 103 J
(d) 4 × 104 J
Ans-(b)
 
Question- The displacement of a body of mass 2 kg varies with time t as s = t2 + 2t , where s is in meters and t is in seconds. The work done by all the forces acting on the body during the time interval t = 2s to t = 4 s is
(a) 36 J
(b) 64 J
(c) 100 J
(d) 120 J
Ans-(b)
 
Question-An object of mass m is allowed to fall from rest along a rough inclined plane. The speed of the object on reaching the bottom of the plane is proportional to
(a) m°
(b) m
(c) m2
(d) m–1
Ans-(a)
 
Question- Work done by the conservative forces on a system is equal to
(a) the change in kinetic energy of the system
(b) negative of the change in potential energy of the system
(c) the change in total mechanical energy of the system
(d) none of these
Ans-(b)
 
Question- A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°. The increases in its potential energy is :
(a) 1 J
(b) 10 J
(c) 100 J
(d) 1000 J
Ans-(a)
 
Question- A man weighing 60 kg lifts a body of mass 15 kg to the top of a building 10 m high in 3 minutes. His efficiency is
(a) 20%
(b) 10%
(c) 30%
(d) 40%
Ans-(a)
 
Question- The P.E. and KE of a helicopter flying horizontally at a height 400 m are in the ratio 5 : 2. The velocity of helicopter is
(a) 28 m/s
(b) 14 m/s
(c) 56 m/s
(d) 30 m/s
Ans-(c)
 
Question-A body is moving under the action of a force. Suddenly,force is increased to such an extent that its kinetic energy is increased by 100%. The momentum increases by :
(a) 100 %
(b) 60 %
(c) 40 %
(d) 20 %
Ans-(c)
 
Question- A man has a box of weight 10 kg. The energy of the box,when the man runs with a constant velocity of 2 m/sec along with the box behind the bus, is :
(a) 10 joule
(b) 30 joule
(c) 20 joule
(d) 2 joule
Ans-(c)
 
Question- What is the shape of the graph between the speed and kinetic energy of a body ?
(a) straight line
(b) hyperbola
(c) parabola
(d) exponential
Ans-(c)
 
Question- If the linear momentum is increased by 50%, then kinetic energy will be increased by :
(a) 50%
(b) 100%
(c) 125 %
(d) 25%
Ans-(c)
 
Question- A spring of spring constant 8 N/cm has an extension of 5 cm. The minimum work done in joule in increasing the extention from 5 cm to 15 cm is
(a) 16 J
(b) 8 J
(c) 4 J
(d) 32 J
Ans-(b)
 
Question- A spring of spring constant 1000 N/m is compressed through 5 cm and is used to push a metal ball of mass 0.1 kg. The velocity with which the metal ball moves is
(a) 5 m/s
(b) 7.5 m/s
(c) 10 m/s
(d) 2.5 m/s
Ans-(b)
 
Question- The potential energy of a certain spring when stretched through a distance ‘S’ is 10 joule. The amount of work (in joule) that must be done on this spring to stretch it through an additional distance ‘S’ will be :
(a) 30
(b) 40
(c) 10
(d) 20
Ans-(a)
 

More question-

 

1. A spring is cut into two equal halves. How is the spring constant of each half affected?

2. The momentum of an object is doubled. How does it’s. K.E. change?

3. In which motion momentum changes but K.E. does not?

4. A light body and a heavy body have same linear momentum. Which one has greater K.E.?                           

 5. A shot fired from cannon explodes in air. What will be the changes in the momentum and the kinetic energy?

 6. Can a body have momentum without energy?

 7. Obtain an expression for K.E. of a body moving uniformly?

8. What is meant by a positive work, negative work and zero work? Illustrate your answer with example?

 9. A body of mass 2kg initially at rest moves under the action of an applied force of 7N on a table with coefficient of kinetic friction = 0.1. Calculate the

(1) Work done by the applied force in 10s

(2) Work done by the friction in 10s

(3) Work done by the net force on the body in 10s.

 10. Derive the expression for the potential energy stored in a spring?

 

Click on link below to download CBSE Class 11 Work Energy and Power Worksheet A.

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Download CBSE Practice Material: Class 11 Physics Chapter 05 Work Energy and Power

CBSE Practice Material: Class 11 Physics Chapter 05 Work Energy and Power

Explore reliable practice questions for Chapter 05 Work Energy and Power tailored for Class 11 Physics learners. Use these structured worksheets to evaluate preparedness and strengthen problem-solving skills.

NCERT-Aligned Questions and Solutions

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Next Steps in Your Exam Preparation

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FAQs

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Are these Physics Class 11 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 11 Work Energy and Power Worksheet Set 01 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 11.

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