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Two simple pendulum of length 1m and 16m...

Two simple pendulum of length `1m` and `16m` respectively are both given small displacement in the same direction at the same instant. They will be again in phase after the shorter pendulum has completed `n` oscillations. The value of `n` is

A

5

B

4

C

`1//4`

D

`4//3`

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The correct Answer is:
D
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