# Energies of Various Photons

In the following express your answer in terms of eV/c and kg m/s. For photons, you may used the expression E=pc. Find the momentum of:

a) 10.0 MeV gamma ray

b) 25 keV X-ray

c) 1.0 micro m infrared photon

d) 150 MHz radio wave photon

https://brainmass.com/physics/energy/energies-various-photons-440409

#### Solution Preview

a) Since a gamma ray is a photon, its momentum is given by p = E/c. Thus a 10.0 MeV gamma ray has a momentum of 10.0 MeV/c.

b) ...

#### Solution Summary

In this solution, we compute the energies of various photons of given wavelengths or frequencies.

$2.19