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Compression and Rarefaction

The thermodyn...

Question

The thermodynamic process involved in the propagation of sound wave in gaseous medium is

A

Adiabatic

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B

Isothermal

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C

Isobaric

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D

Isochoric

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Solution

The correct option is A Adiabatic
The pressure disturbance produced due to sound propagates through compression and rarefaction in the medium.
Compression and rarefaction are produced so quickly in the medium that there is no time for exchange of heat.
$\Rightarrow Δ Q = 0$
Therefore, propagation of sound in a medium is an adiabatic process.

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Compression and Rarefaction

Standard XII Physics

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