Question

What is the frequency of highly energetic ultraviolet radiation that has a wavelength of 129 nm? The speed of light is 3 × 108 m/s. Answer in units of Hz.

Answer 1

Step-by-step explanation:

Below is an attachment containing the solution.

Answer 2

`2.33*10^(15)Hz`

Step-by-step explanation:

The relationship between velocity v, frequency f and wavelength for electromagnetic waves is given by;

`v=\lambda f..............(1)`

Given;

`v=3*10^8m/s\\\lambda=129nm=129*10^(-9)m\\f=?`

We make substitutions into equation (1) as follows;

`f=(v)/(\lambda)\\f=(3*10^8)/(129*10^(-9))`