Question

What would be the velocity of a wave with frequency of 20 Hz and wavelength of 20 m? Mention if the frequency of the sound will be audible here?

Answer 1

Explanation:

Given :

Frequency of wave = 20 Hz

Wavelength = 20 m

To find:

Velocity of the wave

Concept:

Velocity is given be the product of the frequency and wavelength of the wave.

V = λ × μ ,

where λ is the wavelength and μ is the frequency.

Any wave is audible if it ranges between 20 Hz and 20,000 Hz .

Calculation:

Velocity = λ × μ

=> V = 20 × 20

=> V = 400 m/s

Sound will be audible since it falls in the range of 20 Hz and 20000 Hz.