Question

24. A man can jump vertically through a height
1.5 m on earth. The maximum radius of the planet
of the same density as that of earth from whose
gravitational field he can escape by jumping is
(R = 6400 km):
(A) 6 km
(B) 7 km
(C) 3.1 km
(D) 5 km.​

Answer 1

Answer:

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