A) 11.2
B) 5.6
C) 22.4
D) 53.6
Correct Answer: C
Solution :
\[\frac{{{v}_{p}}}{{{v}_{e}}}=\sqrt{\frac{{{g}_{p}}}{{{g}_{e}}}\times \frac{{{R}_{p}}}{{{R}_{e}}}}\]= \[\sqrt{2\times 2}=2\] Þ \[{{v}_{p}}=2\times {{v}_{e}}=2\times 11.2=22.4\ km/s\]
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