Question

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

• 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)

Answer 1

Answer: (B)

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.