The curves for potential energy (U) and ki

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The curves for potential energy $(U)$ and kinetic energy $({E_k})$ of a two particle system are shown in figure. At what points the system will be bound?

A

Only at point $D$

B

Only at point $A$

C

At point $D$ and $A$

D

At points $ A, B$ and $C$

The curves for potential energy $(U)$ and kinetic energy $({E_k})$ of a two particle system are shown in figure. At what points the system will be bound?

The system will be bound at points where total energy is negative. In the given curve at point $A, B$ and $C$ the $P.E.$ is more than $K.E.$