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Work, Energy, Power and Collision — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsWork, Energy, Power and Collision1 Mark
Question
Assertion : The work done during a round trip is always zero.
Reason : No force is required to move a body in its round trip.
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Answer

(d) In a round trip work done is zero only when the force is conservative in nature.Force is always required to move a body in a conservative or non-conservative field

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