If the ratio of vapour density for hydrogen and oxygen is \( \frac{...

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If the ratio of vapour density for hydrogen and oxygen is \( \frac{1}{16} \), then under constant pressure the ratio of their r.m.s.
\( \mathrm{P} \) velocities will be
[RPMT 2003; Similar DCE 2009]
W
(a) \( \frac{4}{1} \)
(b) \( \frac{1}{4} \)
(c) \( \frac{1}{16} \)
(d) \( \frac{16}{1} \)
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