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Questions  

The potential energy of a particle varies with distance x as shown in the graph.

The force acting on the particle is zero at

a
C
b
B
c
B and C
d
A and D

detailed solution

Correct option is C

F = -dUdx it is clear that slope of U - x curve is zero at point B and C.  : F = 0 for point B and C

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