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The given plot shows the variation of U,...

The given plot shows the variation of U, the potential energy of interation between two particles, with the distance separating them, `r`.
1. B and D are equilibrium points.
2. C is point of stable equilibrium.
3. The force of interaction between the two particles is attractive between points C and B, and repulsive between pionts D and E on the curve.
4. The force of interaction between the particle is repulsive between points C and A.
Which of the above statements are correct?

Text Solution

Verified by Experts

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 equilibrium. 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.
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