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NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Select the correct alternative(s)
a) Work done by static friction is always zero
b) Work done by kinetic friction can be positive also
c) Kinetic energy of a system can not be increased without applying any external force on the system
d) Work energy theorem is valid in non-inertial frames also

View answer and explanation

Correct option: B

a, b, d

Option B (a, b, d) is correct because work done by static friction can be zero, work done by kinetic friction can be positive, and the work-energy theorem is valid in non-inertial frames.

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