A) \[4\,{{v}_{e}}\]
B) \[2\,{{v}_{e}}\]
C) \[{{v}_{e}}\]
D) \[\frac{1}{2}{{v}_{e}}\]
Correct Answer: B
Solution :
\[{{v}_{e}}=\sqrt{\frac{2GM}{R}}\]Þ \[{{v}_{e}}\propto \sqrt{M}\] if \[R=\text{constant}\] If the mass of the planet becomes four times then escape velocity will become 2 times.
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