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Q.

Assertion : Work done in moving a body over a closed loop is zero for every force in nature.

Reason : Work done does not depend on nature of force.

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a

If both assertion and reason are true and reason is a true explanation of assertion.
 

b

If both assertion and reason are true but reason is not the correct explanation of assertion
 

c

If assertion is true but reason is false.
 

d

If both assertion and reason are false.
 

answer is D.

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Detailed Solution

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Work done in moving of a body over a closed loop is zero only when the body is moving under the action of conservative forces. It is not zero when the forces are non-conservative.

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