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The ratio of the radii of planets A and B is

The ratio of the radii of planets A and B is k1  and ratio of acceleration due to gravity on them is k2. The ratio of escape velocities from them will be

(a)  k1 k2                               (b) √(k1 k2)

(c)   √( k1/k2 )                               (d) √(k2/k1)

Answer: b

(52)

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