Question

The speed of sound wave in a given medium is:

• A. directly proportional to its frequency.
• B. inversely proportional to its frequency.
• C. directly proportional to the square of its frequency.
• D. independent of its frequency.

Answer 1

The correct option is A directly proportional to its frequency.

We have the relation,

$V=n\lambda$

where,

$V$ is the wave velocity

$n$ is the frequency

$\lambda$ is the wavelength

For a given medium the wavelength is constant. The wavelength changes

only when the sound wave move from one medium to another.

So, $V\propto n$