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MHT CET Physics question

PhysicsOscillationsMHT CET

A simple pendulum of length has a brass bob attached at its lower end. Its period is . If a steel bob of same size having density times that of brass replaces the brass bob and its length is changed so that period becomes , then new length is

Answer: (B)

Solution

The period of a simple pendulum does not depend on the mass or density of the bob, so doubling the period needs

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Question ID VK-068067