Question

if the wavelength of a wave in a particular medium is tripled, what will happen to the frequency of the wave?

Answer 1

V = λ * ν speed of wave in medium

We know the speed of a particular wave in a medium is constant.

ν = V / λ

If λ is increased by 3 then the frequency ν will be reduced by a factor of three to keep the speed constant.

ν' = ν / 3