MHT CET 2022 Physics question

A ring, solid sphere and a disc have same mass and radius. Which of them have the largest moment of inertia?

(A)All have the same moment of inertia.
(B)Solid sphere only.
(C)Ring only.Correct
(D)Disc only.

Answer: (C)

Solution

For the same mass and radius , taking the usual axes through the centre: ring (about the axis perpendicular to its plane) ; disc (same axis) ; solid sphere (about a diameter) . The ring has the

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Question ID VK-093483