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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Assertion: If the ice on the polar caps of the earth melts, then length of day will increase.

Reason: Moment of inertia of the earth increases as ice on polar caps melts.

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Correct option: A

If both assertion and reason are true and reason is the correct explanation of the assertion.

Option A (If both assertion and reason are true and reason is the correct explanation of the assertion) is correct because the melting of polar ice increases Earth's moment of inertia, slowing its rotation and increasing the length of the day.

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