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The gravitational force between two point masses m1 and  m2 at separation r is given by  F = k  m1 m2/r2 The constant k

(a)      Depends on system of units only

(b)  Depends on medium between masses only

(c)   Depends on both (a) and (b)

(d)  Is independent of both (a) and (b)

Answer:  a

(52)

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