Question

Consider the following statements about sound passing through a gas
$\left(A\right)$ The pressure of the gas at a point oscillates with time
$\left(B\right)$ The position of a small layer of gas oscillates with time

• A. Both $\left(A\right)$ and $\left(B\right)$ are correct
• B. $\left(A\right)$ is correct but $\left(B\right)$ is wrong
• C. $\left(B\right)$ is correct but $\left(A\right)$ is wrong
• D. Both $\left(A\right)$ and $\left(B\right)$ are wrong

Answer 1

The correct option is A Both $\left(A\right)$ and $\left(B\right)$ are correct

Sound is a mechanical and longitudinal wave produced by a vibrating source such as a guitar string, tuning fork, human vocal cord.
The vibration produced causes the layer of air molecules to oscillate.
Due to this oscillation, a region of compression and rarefaction is created, which creates oscillation in pressure.