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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

The moment of inertia of uniform circular disc about an axis passing through its centre is . Its M.I. about an axis perpendicular to its plane and just touching the rim will be

Answer: (A)

Solution

gives , and by the parallel-axis theorem MR^2$ = 18\

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Question ID VK-040599