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`

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

Two identical charged spheres of material density rho , suspended from the same point by inextensible strings of equal length make an angle theta between the string. When suspended in a liquid of density sigma the angle theta remains the same. The dielectric constant K of the liquid is

Two identical ball having mass density rho , mass m and charge q are suspended from a common point by two insulating massless strings of equal length. At equilibrium each string makes an angle theta with the vertical. Now both the balls are immersed in a fluid. At equilibrium, theta remains same. If the mass density of liquid is sigma then dielectric constant of liquid will be

In a liquid medium of dielectric constant K and of spherical 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

Two small identical balls carrying the charges of the same sign are suspended from the same point by insulating threads of equal length. When the surrounding space was filled with kerosene the divergence angle between the threads remained constant, What is the density of the material of which the balls are made ?

Two identical balls each having a density rho are suspended from as common point by two insulating strings of equal length. Both the balls have equal mass and charge. In equilibrium each string makes an angle theta with vertical. Now, both the balls are immersed in a liquid. As a result the angle theta does not change. The density of the liquid is sigma . Find the dielectric constant of the liquid.

Two small identical balls are suspened from a common point by two identical strings. When they are given identical charges, they move apar and the strings make with the vertical an angle of q. Now the system is immersed in a liquid and as a result the angle q does not change. If r is the density of the material of the balls and s is the density of the liquid, the dielectric constant of the liquid is