A) \[\sqrt{2/3}\,{{v}_{e}}\]
B) \[\sqrt{3/2}\,{{v}_{e}}\]
C) \[\sqrt{2}/3\,{{v}_{e}}\]
D) \[2/\sqrt{3}\,{{v}_{e}}\]
Correct Answer: A
Solution :
\[\frac{{{v}_{p}}}{{{v}_{e}}}=\sqrt{\frac{{{M}_{p}}}{{{M}_{e}}}\times \frac{{{R}_{e}}}{{{R}_{p}}}}=\sqrt{2\times \frac{1}{3}}=\sqrt{\frac{2}{3}}\]\ \[{{v}_{p}}=\sqrt{\frac{2}{3}}{{v}_{e}}\]
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