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

The given plot shows the variation of U, the potential energy of interaction between two particles with the distance separating them r,

A

B and D are equilibrium points

B

C is a point of stable equilibrium

C

The force of stable equilibrium between the two particles is attracive between points C and D and repulsive between D and E .

D

The force of interaction between particles is repulsive between points E and F.

Text Solution

Verified by Experts

The correct Answer is:
C
At C, potential energy is minimum. So, it is stable equilibrium position.
`F=-(dU)/(dr)=-("Slope of U-graph")`
Negative force means attraction and positive force means repulsion.
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