Question

Find the ratio of the speed of sound in nitrogen gas to that of helium gas, at 300 k is

• A. $\frac{1}{2}$
• B. $\frac{2}{3}$
• C. $\sqrt{\frac{3}{5}}$
• D. $\frac{4}{5}$

Answer 1

Answer: (C)

$\sqrt{\frac{3}{5}}$

Answer 2

$v = \sqrt{\frac{\gamma RT}{M}}$

=$\sqrt{\frac{3}{5}}$.