Question

In a liquid medium of dielectric constant K andof specific gravity 2, two identically chargedspheres are suspended from a fixed point bythreads of equal lengths. The angle betweenthem is 90°. In another medium of unknowndielectric constant K', and specific grayity 4,the angle between them becomes 120°. Ifdensity of material of spheres is 8 gm/cc thenKis :​

Answer 1

n a liquid medium of dielectric constant K andof specific gravity 2