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.

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KollegeApply · Accepted Answer

Both A and B are correct. Sound is a longitudinal wave produced by the oscillation of pressure at a point, thus, forming compressions and rarefactions. That portion of gas itself does not move but the pressure variation causes a disturbance.

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