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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveWavesMedium2 minQB

PhysicsMediumsingle choice

The velocity of sound in dry air is $V_{d}$ and in moist air it is $V_{m}$ . The velocities are measured under the same conditions of temperature and pressure. Which of the following statements is fully correct?

Options:

Answer:

Solution:

Water vapour (molar mass 18) is lighter than the nitrogen and oxygen it displaces (about 29), so moist air at the same $T$ and $P$ is less dense. $v = B / ρ$ with nearly the same $B$ , so $V_{m} > V_{d}$ .

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves

⏱ 2mℹ️ Source: QB

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