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Two identical charged spheres are suspen...

Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle of `30^@` with each other. When suspended in a liquid of density `0.8gcm^-3`, the angle remains the same. If density of the material of the sphere is `1.6gcm^-3`, the dielectric constant of the liquid is

A

2

B

4

C

2.5

D

3.5

Text Solution

Verified by Experts

The correct Answer is:
A
`K=rho/(rho-sigma)=1.6/(1.6-0.8=2`
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