Question

Sound waves of wavelength 1 cm have a velocity of 340m/s in air what is their frequency​

Answer 1

Answer:

Given:

Wavelength = 1cm

= 1 x 10^-2m.

Velocity Of sound = 340m/s.

frequency =?

We know that,

Velocity = frequency x Wavelength

frequency = Velocity/wavelength

frequency = 340/1 x 10^-2

frequency = 340 x 10^2

frequency = 340 x 100

frequency = 34000Hz.

This frequency is more than 20,000Hz and thus this sound can not be heard by human ear.

Explanation:

thanks mark as brilliant

Answer 2

Explanation:

frequency=velocity of air/ wave length

f=340/1*10^-2

f=34000Hz