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  • When speed of sound in oxygen molecules at certain temperature is 460m/sec. The speed of sound in hydrogen at the same temperature will beOption: 1 1

When speed of sound in oxygen molecules at certain temperature is 460m/sec. The speed of sound in hydrogen at the same temperature will be

Option: 1

1900m/sec


Option: 2

1840m/sec


Option: 3

1400m/sec


Option: 4

460m/sec


Answers (1)

best_answer

\begin{aligned} & V=\sqrt{\frac{r R T}{m}} \\ & V \propto \sqrt{\frac{r}{m}} \\ & \frac{V_{0_2}}{V_{n_2}}=\sqrt{\frac{r_{O_2} \times m_{n_2}}{r_{n_2} \times m_{\mathrm{m}_2}}}=\sqrt{\frac{1.4 \times 2}{1.4 \times 32}} \\ & \frac{V_{O_2}}{V_{H_2}}=\frac{1}{4} \\ & V_{H_2}=4 \times 460=1840 \mathrm{~m} / \mathrm{sec} \\ & \end{aligned}

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Deependra Verma

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