Answer :
Explanation:
It is known that speed of sound in water at a temperature of [tex]20^{o}C[/tex] is 1482 m/s.
And, formula showing relation between wavelength, velocity and frequency is as follows.
[tex]\lambda = \frac{\nu}{f}[/tex]
where, [tex]\lambda[/tex] = wavelength
[tex]\nu[/tex] = velocity
f = frequency
Putting the given values into the above formula as follows.
[tex]\lambda = \frac{\nu}{f}[/tex]
= [tex]\frac{1482 m/s}{100 kHz}[/tex]
= [tex]\frac{1482 m/s}{100000 Hz}[/tex] (as 1 kHz = 1000 Hz)
= 0.01482 m
thus, we can conclude that the wavelength of this ultrasound is 0.01482 m.