The wrong statement about electric lines of force is
There is no proof that they exist, these are just imaginary lines.
Choose the wrong statement
a) Work done in moving a charge on equipotential surface is zero.
b) Electric lines of force are always normal to equipotential surface.
c) When two like charges are brought nearer, then electrostatic potential energy of the system is decreased.
d) Electric lines of force diverge at positive charge and converge towards negative charge.