Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is e. Now the strings are rigidly clamped at half the he ight. The equilibrium separation between the balls now become
Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is e. Now the strings are rigidly clamped at half the he ight. The equilibrium separation between the balls now become

Solution: The correct option is C.