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Questions  

A simple pendulum has a time period ‘T’ in vacuum. Its time period when it is completely immersed in a liquid of density one-eighth of the density of the material of the bob is

a
78T
b
58T
c
38T
d
87T

detailed solution

Correct option is D

T=2πgT'=2πg1dds=2πg118T1=87T

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