Question

**how can I find the wavelength when I am only given the energy?
*problem: An x-ray can have an energy of 12.4 MeV. To what wavelength does this correspond?

Answer 1

E=ch/Wavelength

-In other words, Energy (in Joules) =speed of light (2.998x10^8 m/s) x Planck's constant (6.626 x 10^-34) / wavelength in meters

Answer 2

thank you thank you thank you :) @vtrev23

Answer 3

So you just need to convert 12.4 MeV into Joules and plug it in to the equation

Answer 4

it would be 1.98*10^-12 J ?