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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Assertion: A person standing on a rotating platform suddenly stretched his arms, the platform slows down.
Reason: A person by stretching his arms increases the moment of inertia and decreases angular velocity.

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Correct option: A

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

Option A (If both assertion and reason are true and reason is the correct explanation of assertion) is correct because stretching arms increases moment of inertia, which decreases angular velocity to conserve angular momentum.

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