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On a planet a body is left freely from a...

On a planet a body is left freely from a height 2m reaches the ground `sqrt(2)` seconds. If the length of a simple pendulum is 2m on that planet, its time period is

A

`3.14 sec`

B

`6.28sec`

C

`1.57 sec`

D

`4.71sec`

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The correct Answer is:
B
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