Rotational Motion

JEE Main level, single correct, medium

97 of 280

Question 97 of 280

One solid sphere A and another hollow sphere B are of same mass and same outer radii. Their moment of inertia about their diameters are respectively IA\mathrm{I}_{\mathrm{A}} and IB\mathrm{I}_{\mathrm{B}} such that

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Answer: (C) IA<IBI_A \lt I_B

Moment of inertia of a uniform density solid sphere, A=25MR2A=\frac{2}{5} M R^2
Since MM and RR are same, IA<IBI_A \lt I_B.

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