Question

The potential energy `U` between two molecules as a function of the distance `X` between them has been shown in the figure. The two molecules are
A. attracted when x lies between A and B are repelled when X lies between B and C
B. attracted when x lies between B and C and are repelled when x lies between A and B
C. attracted when they reach B
D. repelled when hey reach B

Answer 1

Correct Answer - B
(b) Force `F=(-dU)/(dx)`
BC: slope is +ve , F is attractive
AB: slope is -ve , F is repulsive