Question

6.An ultrasound generator produces sounds of frequency of 30 000 Hz. Calculate their wavelength in air if the speed of sound is 340 m/s.​

Answer 1

Answer:

Given, (In air)

Velocity V=340m/s

Frequency f=20,000Hz

Wavelegth λ=?

V=f.λ

λ=FV=20,000340=0.017Hz

Also, Given (in Water)

Velocity, V=1480m/s

Frequencyf=20,000Hz

wavelength, λ=?

V=F.λ

λ=FV=20,0001480=0.074Hz

Answer 2

Answer:

Here u Go

Explanation:

Given, (In air)

Velocity V=340m/s

Frequency f=20,000Hz

Wavelegth λ=?

V=f.λ

λ=  

F

V

​  

=  

20,000

340

​  

=0.017Hz

Also, Given (in Water)

Velocity, V=1480m/s

Frequencyf=20,000Hz

wavelength, λ=?

V=F.λ

λ=  

F

V

​  

=  

20,000

1480

​  

=0.074Hz