1.

The escape velocity of a body on an imaginary planet which is thrice the radius of the earth and double the mass of the earth is \[({{v}_{e}}\] is the escape velocity of earth)   [Kerala (Med.) 2002]

A.             \[\sqrt{2/3}\,{{v}_{e}}\]
B.               \[\sqrt{3/2}\,{{v}_{e}}\]
C.             \[\sqrt{2}/3\,{{v}_{e}}\]
D.               \[2/\sqrt{3}\,{{v}_{e}}\]
Answer» B.               \[\sqrt{3/2}\,{{v}_{e}}\]


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