A) 0.32
B) 3.16
C) 2.24
D) 0.45
Correct Answer: B
Solution :
\[\because \,\,\,\,\,\,{{V}_{rms}}\,=\,\,\sqrt{\frac{3RT}{M}}\] for same temperature \[{{V}_{rms}}\,\propto \,\,\sqrt{\frac{1}{M}}\] \[\Rightarrow \,\,\,\,\,\,\frac{{{V}_{rms}}(He)}{{{V}_{rms}}\,(Ar)}\,\,=\,\,\sqrt{\frac{40}{4}}\,\,\,=\,\,\,\,\sqrt{10}\,\,=\,\,3.16\]You need to login to perform this action.
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