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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Moment of inertia of a solid sphere about its diameter is 'I'. It is then casted into 27 small spheres of same diameter. The moment of inertia of each new sphere is [MHT-CET 2021, MHT-CET 2021]

Answer: (C)

Solution

Volume conservation gives and , so \frac\frac$

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Question ID VK-040965