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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A rotating body has angular momentum 'L'. If its frequency of rotation is halved and rotational kinetic energy is doubled, its angular momentum becomes [MHT-CET 2021, MHT-CET 2021]

Answer: (B)

Solution

Rotational KE , so and with we

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Question ID VK-040974