Two identical pith balls, each of mass m and charge q are suspended from a common point by two strings of equal length `l`. Find charge q in terms of given quantities, if angle between the strings is `2theta` in equilibrium.

Two identical pith balls, each carrying charge q, are suspended from a common point by two strings of equal length l. Find the mass of each ball if the angle between the strings is 2theta in equilibrium.

Two identical pith balls, each carrying charge q, are suspended from a common point by two strings of equal length l. Find the mass of each ball if the angle between the strings is 2theta in equilibrium.

Two indentical pith balls, each carrying charge q, are suspended from a common point by two strings of equal length l. Find the mass of each ball if the angle between the strings is 2theta in equilibrium.

Two indentical pith balls, each carrying charge q, are suspended from a common point by two strings of equal length l. Find the mass of each ball if the angle between the strings is 2theta in equilibrium.

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