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A pendulum having length L has time peri...

A pendulum having length L has time period `T_0` in air. When it is dipped in water having density `1/4 th` of density of bob. Length of pendulum is increased to `3/4` times initial length. Then new time period `T'` is

A

`T' = T_0`

B

`T' = (4T_0)/3`

C

`T' = (3T_0)/4`

D

NONE

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