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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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Reason : Work done does not depend on nature of force.
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The correct answer is:
If both assertion and reason are false.
Work done in the motion of a body over a closed loop is zero only when the body is moving under the action of conservative forces (like gravitational or electrostatic forces). It is not zero when the forces are non-conservative e.g. frictional forces etc.
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