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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

(a) 1 and 3

B

(b) 1 and 4

C

(c) 2 and 4

D

(d) 2 and 3

Text Solution

Verified by Experts

The correct Answer is:
C
At point C the potential energy is minimum, hence it is a point of stable equilibrium. Also, from C to A, the slope is negative, i.e.,
`(dU)/(dr)lt0`
Hence, the force of interaction between the particles is repulsive between points C and A.
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