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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A particle performs rotational motion with an angular momentum 'L'. If frequency of rotation is doubled and its kinetic energy becomes one fourth, the angular momentum becomes [MHT-CET 2020, MHT-CET 2020]

Answer: (C)

Solution

, so with gives \frac$

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Question ID VK-041023