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Assertion : If work done by conservativ...

Assertion : If work done by conservative forces is positive, kinetic energy will increase.
Reason : Because potential energy will decrease.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

C

If Assertion is true, but the Reason is false

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
In the figure, work done by conservative force (gravity force) is positive, potential enerfy is decresing, But kinetic energy may increase, decrease or remain constant, depending on the value of `F`.
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These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion If work done by conservative force is negative, then potential energy associated with that force should increase. Reason This is according to the relation DeltaU=-W Here, DeltaU is change in potential energy and W is work done by conservative force.

Assertion : On decreasing the distance between two masses potential energy increases. Reason : Potential energy U =(GMm)/(r) .

Assertion: Frictional forces are conservative forces. Reason: Potential energy can be associated with frictional forces.