A simple pendulum having bob of mass m and length of string l has time period of T. If the mass of the bob is doubled and the length of the string is halved, then the time period of this pendulum will be

NDA 2022 Physics question

A simple pendulum having bob of mass and length of string has time period of . If the mass of the bob is doubled and the length of the string is halved, then the time period of this pendulum will be

(A)
(B)Correct
(C)
(D)

Answer: (B)

Solution

does not depend on the mass of the bob, so doubling the mass

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Question ID VK-032276