Question

A typical yellow light has a wavelength of 550 nm. What is the corresponding frequency?

Answer 1

For all waves, `v=flambda`. For light, the velocity is `c`, so `c=flambda`.

Rearranging, `f=c/\lambda = (3.0xx10^8)/(550xx10^-9)=5.45xx10^14` `hz`.