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A simple pendulum oscillating in air has...

A simple pendulum oscillating in air has period T. The bob of the pendulum is completely immersed in a non-viscours liquid. The density of the liquid is `(1)/(16)th` of the material of the bob. If the bob is inside liquid all the time, its period of scillation in this liquid is :

A

`2Tsqrt(1/10`

B

`4Tsqrt(1/15`

C

`4Tsqrt(1/14`

D

`4Tsqrt(1/14`

Text Solution

Verified by Experts

The correct Answer is:
B
`T=2pisqrt(1/g )& T'=2pisqrt(1/(g-(g//16))` `(therefore" Buoyancy"=((mg)/(16))` `therefore T'Txx1/sqrt(1-1/16)=4Txxsqrt(1/15)`
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