Question

The speed of a wave in a medium is 760m/s.if 3600 waves are passing through a point in the medium in 2 minutes, then it's wavelength

Answer 1

velocity of the wave v = 760m/s3600 waves passes in 2 min, therefore no. of waves in one second= 36002×60=30therefore frequency is f=30 Hz.wavelngth is given by:λ=vf=76030=25.33 m

Hope this information will clear your doubt about waves.

Answer 2

Answer:

Wavelength, λ = 25.24 meters

Explanation:

It is given that,

Speed of a wave, v = 760 m/s

If 3600 waves are passing through a point in the medium in 2 minutes. We have to find the wavelength of the wave.

Firstly, finding the frequency of the wave. It is equal to number of waves per unit time i.e.

$f=\dfrac{3600}{2\times 60}=30\ s^{-1}$

Now,

$\lambda=\dfrac{v}{f}$

$\lambda=\dfrac{760\ m/s}{30\ s}$

$\lambda=25.34\ m$

Hence, the wavelength of the wave is 25.34 m.