A) 2
B) \[\sqrt{2}\]
C) \[1/\sqrt{2}\]
D) \[\sqrt{3}\]
Correct Answer: B
Solution :
\[{{v}_{e}}=\sqrt{2}\,{{v}_{0}},\] i.e. if the orbital velocity of moon is increased by factor of \[\sqrt{2}\] then it will escape out from the gravitational field of earth.
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