CBSE Class 11 Physics Chapter 6 Work, Energy and Power Multiple Choice Questions with Answers. MCQ Questions Class 11 Physics Work, Energy and Power with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Physics Work, Energy and Power MCQs with Answers to know their preparation level.
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MCQ Questions Class 11 Physics Work, Energy and Power with Answers - Set - 1
Question 1:
Two masses 1 g and 4 g are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is
(a) 4 : 1
(b) 1 : 2
(c) 0 : 1
(d) 1 : 6
Correct Answer – (B)
Question 2 :
A solid cylinder of length 1 m and diameter of cross section y 100 cms is first placed with its axis vertical its then slowly inclined till its axis is horizontal. The loss in its potential energy if the mass of the cylinder is 10 kg is
(a) 5g J
(b) 10g J
(c) Zero
(d) g J
Correct Answer – (C)
Question 3 :
A quantity of work of 1000 J is done in 2 seconds. The power utilised is
(a) 998 W
(b) 1002 W
(c) 2000 W
(d) 500 W
Correct Answer – (D)
Question 4 :
A body of mass 10 kg is travelling with uniform speed of 5 m/s. Its kinetic energy is
(a) 25 J
(b) 125 J
(c) 1250 J
(d) 1000 J
Correct Answer – (B)
Question 5 :
A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
(a) 7.2 J
(b) 3.6 J
(c) 120 J
(d) 1200 J
Correct Answer – (B)
MCQ Questions Class 11 Physics Work, Energy and Power with Answers
Question 6 :
A body of mass 10 kg moving at a height of 2 m, with uniform speed of 2 m/s. Its total energy is
(a) 316 J
(b) 216 J
(c) 116 J
(d) 392 J
Correct Answer – (B)
Question 7 :
When the linear momentum of a particle is increased by 1% its kinetic energy increases by x%. When the kinetic energy of the particle is increased by 300%, its linear momentum increases by y%. The ratio of y to x is
(a) 300
(b) 150
(c) 100
(d) 50
Correct Answer – (D)
Question 8 :
A ball is dropped from a height of 1 m. If the coeffcient of restitution between the surface and ball is 0.6, the ball rebounds to a height of
(a) 0.6 m
(b) 0.4 m
(c) 1 m
(d) 0.36 m
Correct Answer – (D)
Question 9 :
A body of mass 20 kg is initially at a height of 3 m above the ground . It is lifted to a height of 2 m from that position. Its increase in potential energy is
(a) 100 J
(b) 392 J
(c) 60 J
(d) -100 J
Correct Answer – (B)
Question 10 :
A man of 60 kg weight is standing at rest on a platform. He jumps up vertically a distance of 1 m and the platform at the same instant moves horizontally forward with the result that the man lands 1 meter behind the point on the platfrom from where the took the jump the total work done by the man at the instant he lands is
(a) 300 J
(b) 150 J
(c) 600 J
(d) zero
Correct Answer – (C)
- NCERT Solutions Class 11 Physics Chapter 1 : Physical world
- NCERT Solutions Class 11 Physics Chapter 2 : Units And Measurements
- NCERT Solutions Class 11 Physics Chapter 3 : Motion In A Straight Line
- NCERT Solutions Class 11 Physics Chapter 4 : Motion In A Plane
- NCERT Solutions Class 11 Physics Chapter 5 : Laws of Motion
- NCERT Solutions Class 11 Physics Chapter 6 : Work Energy Power
- NCERT Solutions Class 11 Physics Chapter 7 : Rotational-Motion
- NCERT Solutions Class 11 Physics Chapter 8 : Gravitation
- NCERT Solutions Class 11 Physics Chapter 9 : Mechanical Properties of Solids
- NCERT Solutions Class 11 Physics Chapter 10 : Mechanical Properties of Fluids
- NCERT Solutions Class 11 Physics Chapter 11 : Thermal Properties of Matter
- NCERT Solutions Class 11 Physics Chapter 12 : Thermodynamics
- NCERT Solutions Class 11 Physics Chapter 13 : Kinetic Theory
- NCERT Solutions Class 11 Physics Chapter 14 : Oscillations
- NCERT Solutions Class 11 Physics Chapter 15 : Waves
