CBSE Class 11 Work Energy and Power Worksheet A

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Read and download free pdf of CBSE Class 11 Work Energy and Power Worksheet A. Download printable Physics Class 11 Worksheets in pdf format, CBSE Class 11 Physics Chapter 6 Work Energy and Power Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Physics Class 11 Assignments and practice them daily to get better marks in tests and exams for Class 11. Free chapter wise worksheets with answers have been designed by Class 11 teachers as per latest examination pattern

Chapter 6 Work Energy and Power Physics Worksheet for Class 11

Class 11 Physics students should refer to the following printable worksheet in Pdf in Class 11. This test paper with questions and solutions for Class 11 Physics will be very useful for tests and exams and help you to score better marks

Class 11 Physics Chapter 6 Work Energy and Power Worksheet Pdf

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.

Chapter 01 Physical World
CBSE Class 11 Physical World and Measurement Worksheet A
CBSE Class 11 Physical World and Measurement Worksheet B
CBSE Class 11 Physics Fundamental Forces in Nature Worksheet Set C
CBSE Class 11 Physics Physical World And Dimension Worksheet Set A
CBSE Class 11 Physics Physical World And Dimension Worksheet Set B
CBSE Class 11 Physics Physical World And Measurements Worksheet Se A
CBSE Class 11 Physics Physical World Worksheet Set A
CBSE Class 11 Physics Physical World Worksheet Set A
CBSE Class 11 Physics Scope and Excitement of Physics Worksheet Set B
CBSE Class 11 Physics Towards Unification of Forces and Nature of Physical Laws Worksheet Set D
Chapter 02 Units And Measurement
CBSE Class 11 Physics Unit and Measurement Worksheet Set A
Chapter 03 Motion in a Straight Line
CBSE Class 11 Motion in Straight Line Worksheet A
CBSE Class 11 Motion in Straight Line Worksheet B
CBSE Class 11 Motion in Straight Line Worksheet C
CBSE Class 11 Physics Motion in a Straight Line Worksheet Set A
Chapter 04 Motion in a Plane
CBSE Class 11 Motion in Plane Worksheet A
CBSE Class 11 Physics Motion in a Plane Worksheet Set A
Chapter 05 Laws of Motion
CBSE Class 11 Laws of Motion Worksheet A
CBSE Class 11 Laws of Motion Worksheet B
CBSE Class 11 Laws of Motion Worksheet C
CBSE Class 11 Laws of Motion Worksheet D
CBSE Class 11 Physics Laws of Motion Worksheet Set A
CBSE Class 11 Physics Laws of Motion Worksheet Set E
Chapter 06 Work Energy and Power
CBSE Class 11 Physics Work Energy and Power Worksheet Set A
CBSE Class 11 Physics Work Energy And Power Worksheet Set D
CBSE Class 11 Physics Work Energy And Power Worksheet Set E
CBSE Class 11 Work Energy and Power Worksheet A
CBSE Class 11 Work Energy and Power Worksheet B
CBSE Class 11 Work Energy and Power Worksheet C
Chapter 07 System Of Particles And Rotational Motion
CBSE Class 11 Physics Kinematics Worksheet Set A
CBSE Class 11 Physics Kinematics Worksheet Set B
CBSE Class 11 Physics System of Particles And Rigid Body Worksheet
CBSE Class 11 Physics System of Particles and Rotational Motion Worksheet Set A
CBSE Class 11 Physics System of Particles And Rotational Motion Worksheet Set C
CBSE Class 11 System of particles and Rotational Motion Worksheet A
CBSE Class 11 System of particles and Rotational Motion Worksheet B
Chapter 08 Gravitation
CBSE Class 11 Gravitation Worksheet A
CBSE Class 11 Gravitation Worksheet B
CBSE Class 11 Gravitation Worksheet C
CBSE Class 11 Physics Gravitation Worksheet Set A
CBSE Class 11 Physics Gravitation Worksheet Set D
CBSE Class 11 Physics Gravitation Worksheet Set E
CBSE Class 11 Physics Gravitation Worksheet Set F
Chapter 09 Mechanical Properties Of Solids
CBSE Class 11 Physics Mechnical Properties of Solids Worksheet Set A
Chapter 10 Mechanical Properties Of Fluids
CBSE Class 11 Fluid Flow Worksheet A
CBSE Class 11 Physics Mechanical Properties of Fluids Worksheet Set A
CBSE Class 11 Physics Mechanical Properties of Fluids Worksheet Set B
CBSE Class 11 Physics Mechanical Properties of Fluids Worksheet Set C
CBSE Class 11 Pressure in fluids Worksheet A
CBSE Class 11 Surface Tension Worksheet A
CBSE Class 11 Viscosity Worksheet A
Chapter 11 Thermal Properties Of Matter
CBSE Class 11 Physics Properties of Bulk Matter Worksheet
CBSE Class 11 Physics Thermal Properties of Matter Worksheet Set A
CBSE Class 11 Physics Thermal Properties of Matter Worksheet Set B
CBSE Class 11 Specific heat Calorimetry and Hygrometer Worksheet A
CBSE Class 11 Specific heat Calorimetry and Hygrometer Worksheet B
CBSE Class 11 Thermometry Thermal Expansion and Specific Heat Worksheet A
CBSE Class 11 Thermometry and Thermal Expansion Worksheet A
CBSE Class 11 Transfer of Heat Worksheet A
CBSE Class 11 Transfer of Heat Worksheet B
CBSE Class 11 Transfer of Heat Worksheet C
Chapter 12 Thermodynamics
CBSE Class 11 Physics Thermodynamics Worksheet Set A
CBSE Class 11 Thermodynamics Worksheet A
CBSE Class 11 Thermodynamics Worksheet B
CBSE Class 11 Thermodynamics Worksheet C
CBSE Class 11 Thermodynamics Worksheet D
Chapter 13 Kinetic Theory
CBSE Class 11 Kinetic Theory of Gases Worksheet A
CBSE Class 11 Kinetic Theory of Gases Worksheet B
CBSE Class 11 Kinetic Theory of Gases Worksheet C
CBSE Class 11 Physics Kinetic Energy Worksheet Set A
Chapter 14 Oscillations
CBSE Class 11 Oscillations Worksheet A
CBSE Class 11 Oscillations Worksheet B
CBSE Class 11 Oscillations Worksheet C
CBSE Class 11 Physics Oscillations And Waves Worksheet
CBSE Class 11 Physics Oscillations Worksheet Set A
Chapter 15 Waves
CBSE Class 11 Physics Waves Worksheet Set A
CBSE Class 11 Waves Worksheet A
CBSE Class 11 Waves Worksheet B
CBSE Class 11 Waves Worksheet C
z More Worksheets for Class 11 Physics
CBSE Class 11 Elasticity Worksheet A
CBSE Class 11 Liquid in Motion Worksheet A
CBSE Class 11 Liquid in Rest Worksheet A
CBSE Class 11 Liquid in Rest Worksheet B
CBSE Class 11 Liquid in Rest Worksheet C
CBSE Class 11 Modulus of Elasticity Worksheet A
CBSE Class 11 Physics Ray Optics Worksheet
CBSE Class 11 Physics Worksheet Set A
CBSE Class 11 Physics Worksheet Set B Solved
CBSE Class 11 Physics Worksheet Set C Solved
CBSE Class 11 Physics Worksheet Set D Solved
CBSE Class 11 Physics Worksheet Set E Solved
CBSE Class 11 Physics Worksheet Set F Solved
CBSE Class 11 Physics Worksheet Set G Solved
CBSE Class 11 Physics Worksheet Set H Solved
CBSE Class 11 Physics Worksheet Set I Solved

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CBSE Class 11 Physics Chapter 6 Work Energy and Power Worksheet

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