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The interaction potential between two quarks, separated by a distance r inside a nucleon can be described by (a, b and β are positive constants)

The interaction potential between two quarks, separated by a distance r inside a nucleon can be described by (a, b and β are positive constants) Correct Answer $$ - \frac{a}{r} + br$$

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Which of the following functions describes the nature of interaction potential V(r) between two quarks inside a nucleon? (r is the distance between the quarks and a and b positive constants of suitable dimensions).
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