Question

a source produces a sound of frequency 5 Hertz in air. what is its wavelength ​

Answer 1

Given:

A source produces a sound of frequency 5 Hertz in air.

To find:

It's wavelength ?

Calculation:

First of all, let's revise the various terms of a SOUND WAVE :

• Frequency: It's an intrinsic property of a wave determined by its source representation the number of vibrations completed in a single second.

• Wavelength : It is the distance between adjacent troughs and adjacent crests.

• Velocity : It refers to velocity with which the wave moves in the medium (usually 330 m/s in air).

$\sf \therefore \: wavelength = \dfrac{velocity}{frequency}$

$\sf \implies \: wavelength = \dfrac{330}{5}$

$\sf \implies \: wavelength = 66 \: m$

So, wavelength of sound wave is 66 metres.