Kinetic Theory Of Gases Question 129
Question: If the ratio of vapour density for hydrogen and oxygen is $ \frac{1}{16} $ , then under constant pressure the ratio of their rms velocities will be
Options:
A) $ \frac{4}{1} $
B) $ \frac{1}{4} $
C) $ \frac{1}{16} $
D) $ \frac{16}{1} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ v _{rms}=\sqrt{\frac{3p}{\rho }},\Rightarrow ,\frac{v _{1}}{v _{2}}=\sqrt{\frac{{\rho _{1}}}{{\rho _{2}}}}=\sqrt{\frac{1}{16}}=\frac{1}{4}$
BETA
