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Q.

The potential energy of a body is given by U = A-Bx2(where x is the displacement). The magnitude of force acting on the particle is

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a

Constant

b

Proportional to x2

c

Proportional to x

d

Inversely proportional to x

answer is B.

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Detailed Solution

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U = A-Bx2     ⇒ F = -dUdx = 2Bx     ⇒  F directly proportional  x

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