Question

A sound wave has a frequency 2hz and wavelength 100cm calculate the speed of wave

Answer 1

Do you know formula, $V=\lambda\times\nu$

where V is the speed of wave , $\lambda$ is the wavelength of wave and $\nu$ is the frequency of wave.

Given, $\lambda=100cm=1m$
and $\nu=2Hz$
now, V = 1 × 2 = 2 m/s

hence, speed of sound wave is 2m/s

Answer 2

We know the formula for speed of the wave can b written as.

 V = λг

Where, λ is wavelength

            And,  г is frequency

And V is the speed of sound.

Hence, V = 2*100 = 200 cm/s = 2 m/s