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Q.

A particle of mass m lies at a distance ‘r’ from centre of earth. The force of attraction between the particle and earth as a function of distance is F(r)

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a

F(r)∝ 1r2 for r

b

F(r)∝ 1r for r>R

c

F(r)∝ r for r

d

F(r)∝ 1r for r

answer is C.

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A particle of mass m lies at a distance ‘r’ from centre of earth. The force of attraction between the particle and earth as a function of distance is F(r)