Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveWavesMedium2 minQB

PhysicsMediummultiple choice

A sound wave propagates in a medium of bulk modulus $B$ by means of compressions and rarefactions. If $P_{c}$ and $P_{r}$ are the pressures at compression and rarefaction respectively, $a$ is the wave amplitude and $k$ the angular wave number, then:

Options:(select one or more)

Answer:

A, C, D

Solution:

$Δ P = - B \partial y / \partial x = B ak cos (ω t - k x)$ . So the pressure amplitude is $B ak$ and the pressure leads displacement by $π /2$ . Pressure is maximum at compression and minimum at rarefaction.

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves

⏱ 2mℹ️ Source: QB

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