Consider the following statements about sound passing through a gas.
(a) The pressure of the gas at a point oscillates in time.
(b) The position of a small layer of the gas oscillates in time.

Question

Consider the following statements about sound passing through a gas. (a) The pressure of the gas at a point oscillates in time. (b) The position of a small layer of the gas oscillates in time.

TestHub · Accepted Answer

Sound waves are longitudinal waves. As sound passes through a gas, it creates regions of compression (higher pressure) and rarefaction (lower pressure), causing the pressure at a point to oscillate. Simultaneously, the gas particles themselves oscillate back and forth about their equilibrium positions, meaning a small layer of gas also oscillates. Thus, both statements are correct.

Physics - Sound Wave Question with Solution | TestHub

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