Two identically charged spheres are susp...

Two identically charged spheres are suspended by strings of equal length. The strings make an angle of `30^(@)` with each other. When suspended in a liquid of density `0.8 g// c c` the angle remains same. What is the dielectric constant of liquid. Density of sphere`=1.6 g//c c`

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The correct Answer is:

Therefore `K=2`

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