Speed at which a Wave Moves Equals the Frequency Times the Wavelength

For any wave motion, the speed at which a wave moves equals the frequency times the wavelength.
Waves with longer wavelengths have lower frequencies.
Mathematically, we can express this as

c =  f  λ
where the Greek letter for “l”—lambda, λ—is used to denote wavelength and
c is the scientific symbol for the speed of light.
Solving for the wavelength, this is expressed as:

λ = c / f