Two identical charged sphere are suspended in air by strings of equal lengths and make an angle of 30° with each other. When suspended in a liquid of density 0.8 gm cm–3, the angle remains the same. What is the dielectric constant of the liquid. Take density of material of the sphere = 1.6 gm cm–3
(1) 2
(2) 5
(3) 10
(4) None of the above