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In a liquid medium of dielectric constant `K` and specific gravity `2` two identically charged spheres are suspended from a fixed point by threads of equal length .The angle between them is `90^(@)` .In another medium of unknown dielectric constant `K^(1)` and specific gravity `4` the angle between them become `120^(@)` if density of material of spheres is `8gm//c c` then` K^(1)` is

A

`K/2`

B

`(sqrt(3))/K`

C

`(sqrt(3))/2K`

D

`K/(sqrt(3))`

Text Solution

Verified by Experts

The correct Answer is:
D
`F=mg Tan theta`
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NARAYNA-ELECTRIC CHARGES AND FIELDS-EXERCISE -4
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