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 - 3
Question 1:
No work is done if
(a) displacement is zero
(b) force is zero
(c) force and displacement are mutually perpendicular
(d) All of these
Correct Answer – (D)
Question 2 :
A man pushes a wall and fails to displace it, he does
(a) negative work
(b) positive but not maximum work
(c) no work at all
(d) maximum positive work
Correct Answer – (C)
Question 3 :
The position of a particle of mass 4 g, acted upon by a constant force is given by x = 4t2 + t, where x is in metre andt in second. The work done during the first 2 seconds is
(a) 128 mJ
(b) 512 mJ
(c) 576 mJ
(d) 144 mJ
Correct Answer – (C)
Question 4 :
A particle of mass m has momentum p. Its kinetic energy will be
(a) mp
(b) p2m
(c) p2 m
(d) 2 2 p m
Correct Answer – (D)
Question 5 :
A uniform force of (3iˆ+ ˆj) newton acts on a particle of mass 2 kg. The particle is displaced from position (2$i + k$) meter to position (4$i + 3$j – k$) meter. The work done by the force on the particle is
(a) 6 J
(b) 13 J
(c) 15 J
(d) 9 J
Correct Answer – (D)
MCQ Questions Class 11 Physics Work, Energy and Power with Answers
Question 6 :
A boy carrying a box on his head is walking on a level road from one place to another is doing no work. This statement is
(a) correct
(b) incorrect
(c) partly correct
(d) cannot say
Correct Answer – (A)
Question 7 :
A boy pushes a toy box 2.0 m along the floor by means of a force of 10 N directed downward at an angle of 60º to the horizontal. The work done by the boy is
(a) 6 J
(b) 8 J
(c) 10 J
(d) 12 J
Correct Answer – (C)
Question 8 :
Kinetic energy, with any reference, must be
(a) zero
(b) positive
(c) negative
(d) both (b) and (c)
Correct Answer – (B)
Question 9 :
A light and a heavy body have equal momentum. Which one has greater K.E.?
(a) The lighter body
(b) The heavier body
(c) Both have equal K.E.
(d) Data given is incomplete
Correct Answer – (A)
Question 10 :
When the force retards the motion of body, the work done is
(a) zero
(b) negative
(c) positive
(d) Positive or negative depending upon the magnitude of force and displacement
Correct Answer – (B)
- 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
