# Mark the correct statements :

(A) For +ive charge P is a position of unstable equilibrium for displacement along CD

(B) For -ive charge P is a position of unstable equilibrium for displacement along MN

(C)For +ive charge P is a position of stable equilibrium for displacement along MN

(D)All of the above

Equilibrium is stable when particle displaced from equilibrium position comes back to equilibrium position and unstable equilibrium is when particle has no tendency to come back to equilibrium position when displaced from it.
Hence D is the correct answer.

edited Aug 1, 2014