The given plot shows the variation of U, the potential energy of interaction between two particles with the distance r separating them. a) B and C are equilibrium points b) C is a point of stable equilibrium c) The forceof interaction between the twoparticles between D and E d) The forceof interaction between particles is repulsive between points E and F. Which of the absove statements are correct 1) a and b 2) a and d 3) b and d 4) b and c

The given plot shows the variation of U, the potential energy of inter

1.	The given plot shows the variation of U, the potential energy of interaction between two particles with the distance r separating them. a) B and C are equilibrium points b) C is a point of stable equilibrium c) The forceof interaction between the twoparticles between D and E d) The forceof interaction between particles is repulsive between points E and F. Which of the absove statements are correct 1) a and b 2) a and d 3) b and d 4) b and c
Answer» SOLUTION :The corresponding F - r graph is shown below If particle at C is displaced either of the side, the force will bring it BACK to C. Hence .C. is a POINT of stable equlibrium. Force on a particle at D is negative, it is directed towards C and is directed away from D. Hence force of interaction is ATTRACTIVE between C and D while repulsive between D and E.