Question

What is the frequency in hertz of blue light having a wavelength of 425 nm?

Answer 1

`7,0588xx10^(14)Hz`

Explanation:

Using the equation for the speed of a light wave, and knowing its speed in air, we get :

`c=flambda`

`thereforef=c/lambda=(3xx10^8m//s)/(425xx10^(-9)m)=7,0588xx10^(14)Hz`