The speed of a wave in a certain medium is 900 m/s. If 3000 waves passes over a certain point of the medium in 2 minutes, then compute its wavelength.

Explanation

The speed of a wave in medium `v=900 ms^(-1)`
Freq. of wave = no. of waves passing per sec (n) = 3000 waves/2min `=(3000)/(2 xx 60) = 25s`
Wave length `=lambda`= ?
`v= n lambda , lambda = v/n`
`lambda = 36 m`