First slide

Speed of wave

Question

Propagation of a sound wave in a gas is quite close to

Moderate

A

an isothermal process
B

an adiabatic process
C

an isobaric process
D

a process that does not exhibit properties close to any of the three given in (a), (b), (c)

Solution

Sound waves propagate so fast in a gas that there is no time for the exchange of energy with the medium (gas). Hence, it is quite close to an adiabatic process.

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