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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A particle executes uniform circular motion with angular momentum 'L'. Its rotational kinetic energy becomes half, when the angular frequency is doubled. Its new angular momentum is [MHT-CET 2020, MHT-CET 2020]

Answer: (B)

Solution

Rotational KE ; halving it while doubling gives

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Question ID VK-040990