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 - 2
Question 1:
An electric heater of rating 1000 W is used for 5 hrs per day for 20 days. The electrical energy utilised is
(a) 150 kWh
(b) 200 kWh
(c) 100 kWh
(d) 300 kWh
Correct Answer – (C)
Question 2 :
A body of mass 10 kg is moved parallel to the ground, through a distance of 2 m. The work done against gravitational force is
(a) 196 J
(b) -196 J
(c) 20 J
(d) zero
Correct Answer – (D)
Question 3 :
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)
Question 4 :
A body of mass 100 kg falls from a height of 10 m. Its increase in kinetic energy is
(a) 9800 J
(b) 1000 J
(c) 5000 J
(d) 3000 J
Correct Answer – (A)
Question 5 :
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)
MCQ Questions Class 11 Physics Work, Energy and Power with Answers
Question 6 :
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 7 :
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 8 :
An isolated particle of mass m is moving in a horizontal plane (x-y), along the x-axis, at a certain height above the ground. It suddenly explodes into two fragments of masses m/4 and 3m/4 . An instant later, the smaller fragment is at y = + 15 cm. The larger fragment at this instant is at
(a) y = -5 cm
(b) y = +20 cm
(c) y = +5 cm
(d) y = -20 cm
Correct Answer – (A)
Question 9 :
A marble moving with some velocity collides perfectly elastically head-on with another marble at rest having mass 1.5 times the mass of the colliding marble. The percentage of kinetic energy by the colliding marble after the collision is
(a) 4
(b) 25
(c) 44
(d) 67
Correct Answer – (A)
Question 10 :
A body of mass 10 kg is initially at a height of 20 m above the ground. It falls to a height of 5 m above the ground. Its potential energy in the new position is
(a) 490 J
(b) 50 J
(c) 100 J
(d) 300 J
Correct Answer – (A)
- 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
