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Question

Assertion (A): A non conservative force (F) can be given by the relation F=âˆ’dudx Reason (R) : Work done by the conservative force is independent of the path followed

A
A and R are correct and R is the correct explanation of A
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B
A and R are correct and R is not the correct explanation A
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C
A is true and R is false
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D
A is false and R is true
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Solution

The correct option is D A is false and R is trueThe work done by a non-conservative force does depend upon the path taken. For example when we pull an object on a rough surface the pull depends on the surface or in other words the friction. The path determines the force with the object is pulled.But the work done by a conservative force does not depend upon the path taken. For example, gravity acting on a body does not depend on the path.Hence, Assertion (A): WrongReason (R) :Correct

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