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The escape velocity for the earth is 11.2 km/sec. The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be

(a)      112.0 km/s                               (b)  5.6 km/

(c)   280.0 km/s                                (d)  56.0 km/s

Answer: d

(8)

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