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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Two loops of radii 'R' and 'nR' are made from same wire of same linear mass density. The ratio of moment of inertia about an axis passing through centre and perpendicular to plane is 1:27. The value of n is [MHT-CET 2022, MHT-CET 2022]

Answer: (B)

Solution

Mass is proportional to radius, so and , giving

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Question ID VK-040892