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A pendulum is hung the roof of a suffici...

A pendulum is hung the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator .The acceleration of the bob of the pendulum is `20m//s^(2)` at a distance of `5m` from the mean position .The time period of oscillation is

A

`2s`

B

`pis`

C

`2pis`

D

`1s`

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The correct Answer is:
B
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