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MHT CET 2026 Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET 2026

Let M and L be the mass and length of thin uniform rod respectively. In first case, axis of rotation is passing through centre and perpendicular to length of rod. In second case axis of rotation is passing through one end and perpendicular to length of rod. The ratio of radius of gyration in first case to second case is

Answer: (B)

Solution

Moment of inertia of a thin rod about a perpendicular axis through the centre is and about a perpendicular axis through one end is . Radius of gyration , so and $ =

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Question ID VK-096015