Question

a source of sound produces 1800 waves in 6sec .if the distance covered by a compression and adjacent rarefaction is 55cm ,find the frequency and speed of the wave produced

Answer 1

In 6 seconds, 1800 waves are produces.
So in 1 second, there will be 300 waves.

So frequency = 300 Hz

Let wavelength of that wave = x

So, distance between compression and adjacent rarefaction in terms of wavelength = x/2 = 55 cm

therefore, x = 110 cm = 1.1 m

Speed of a wave = (wavelength)(frequency)
= (1.1)(300)
= 330 m/s