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

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Only at point D

Only at point A

At point D and A

At points A, B and C

answer is D.

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Detailed Solution

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.

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