The ratio of speed of sound in hydrogen gas to the speed of sound in oxygen gas at the same temperature is
JEE MAIN 2023, Medium
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$C=\sqrt{\frac{\gamma R T}{M}}$
$C \propto \frac{1}{\sqrt{M}}$
$\frac{C_{H_2}}{C_{O_2}}=\sqrt{\frac{32}{2}}=4: 1$
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