Question

Two sound waves, in air, have wavelengths in the ratio 1:3. Find the ratio of their frequencies.

Answer 1

Step 1: Given Data

Two sound waves have wavelengths in the ratio = 1:3

We need to find out the ratio of their respective frequencies.

Step 2: Formula used

$Frequency\left(f\right)=\frac{Velocity\left(v\right)}{Wavelength\left(\lambda \right)}$

As it is clear from the formula frequency and wavelength are reciprocal to each other.

So, the ratio of wavelength is 1:3.

Hence, the ratio of their respective frequencies will be 3:1.