Conservative and Non Conservative Forces NEET Questions

Physics - Work, Energy, and Power

Conservative and Non Conservative Forces MCQ Questions


1.
Which of the following statements is true for a non-conservative force?
A.
Work done is path-independent
B.
Work done depends on the path
C.
Work done is zero in a closed loop
D.
Work done by it is always positive
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ANSWER :
B. Work done depends on the path
2.
Which force can do work on a body but does not affect its total mechanical energy?
A.
Friction
B.
Gravity
C.
Normal force
D.
None of the above
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ANSWER :
A. Friction
3.
Which force is responsible for converting mechanical energy into heat?
A.
Magnetic force
B.
Friction
C.
Gravity
D.
Tension
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ANSWER :
B. Friction
4.
Which of the following is an example of a non-conservative force?

NEET - 2017

A.
Gravitational force
B.
Electrostatic force
C.
Frictional force
D.
Spring force
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ANSWER :
C. Frictional force
5.
In which case is work done by gravity zero?
A.
Lifting an object
B.
Moving horizontally
C.
Moving vertically
D.
In free fall
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ANSWER :
D. In free fall
6.
The energy dissipated due to friction is mostly converted into:
A.
Sound energy
B.
Kinetic energy
C.
Heat energy
D.
Electrical energy
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ANSWER :
C. Heat energy