Assertion (A) : When a uniform metallic rod rotating about perpendicular bisector with constant angular speed is heated uniformly to raise its temperature slightly, its speed of rotation increases. Reason (R) : When a metal rod is heated uniformly to raise its temperature slightly its moment of inertia increases.

Question

Assertion (A) : When a uniform metallic rod rotating about perpendicular bisector with constant angular speed is heated uniformly to raise its temperature slightly, its speed of rotation increases. Reason (R) : When a metal rod is heated uniformly to raise its temperature slightly its moment of inertia increases., (A) and (R) are true and R is correct explanation of A., (A) and (R) are true but (R) is not correct explanation of A, (A) is true, but (R) is false, (A) is false but R is true

MARKS App · Accepted Answer

When rod is heated uniformly, its moment inertia increases As L = constant, so angular speed should decrease.

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