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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Two circular uniform discs A and B are of equal masses and thicknesses but made of metal with densities and (). If their moments of inertia about an axis passing through their centre and perpendicular to circular faces be and then

Answer: (C)

Solution

Equal mass and thickness give , so the denser disc A has the smaller radius and

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Question ID VK-040332