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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Moment of inertia of the rod about an axis passing through the centre and perpendicular to its length is 'I'. The same rod is bent into a ring and its moment of inertia about the diameter is 'I' then I/I is [MHT-CET 2012, MHT-CET 2012]

Answer: (D)

Solution

; for the ring and , so

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Question ID VK-041092