A) 3 : 1
B) 1 : 2
C) 1 : 1
D) 2 : 1
Correct Answer: C
Solution :
\[v=R\sqrt{\frac{8}{3}\pi \rho G}\]Þ\[\frac{{{v}_{p}}}{{{v}_{e}}}=\frac{{{R}_{p}}}{{{R}_{e}}}\sqrt{\frac{{{\rho }_{p}}}{{{\rho }_{e}}}}\]=\[2\sqrt{\frac{1}{4}}=1\]
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