Q 11-14-048JEE MainJEE Main 2024 (31 Jan, Shift 2)Medium
The speed of sound in oxygen at S.T.P. will be approximately: (Given $R = 8.3\ \text{J K}^{-1}$, $\gamma = 1.4$)
Answer: (A) $310\ \text{m s}^{-1}$
$$v = \sqrt{\frac{\gamma RT}{M}} = \sqrt{\frac{1.4\times8.3\times273}{0.032}} \approx 315\ \text{m s}^{-1}$$
The closest option is $310\ \text{m s}^{-1}$.
Solution by Sreeraj P, M.Sc Physics