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Q.
Out of the following gases under similar condition of temperature and pressure, the velocity of sound will be maximum in
Waves
Solution:
Velocity of the sound in gas
$v = \sqrt{\frac{\gamma RT}{M}}$
where the symbols have their usual meanings.
All the given gases are diatomic and are at same temperature,
$\therefore v \propto \frac{1}{\sqrt{M}}$