Question

The wavelength and frequency of a sound wave in a certain medium 20cm and 1650hz respectively .Keeping the medium same if the wavelength is changed to 16cm calculate

Answer 1

I case,

When wavelength=20cm=0.2m

Frequency =1650Hz

So,Speed=wavelength× frequency.

=0.2×1650=330m/sec.

We know that the speed of an object in a given medium is same.

So,v=330m/Sec.

Wavelength=16cm=0.16m

So,frequency=330/0.16=2,062.5Hz.

So,frequency=2,062.5Hz.