(a) What is the frequency of a photon whose energy is 3.5 times the rest energy of an electron? (b) What would be the linear momentum of the photon?

Answer 1

ε = 3•mc^2= hν,
=> ν =3•mc^2/h =
= 3•9.1•10^-31•(3•10^8)^2/6.63•10^-34 =
= 3.7•10^20 Hz.
p= ε /c =3•mc^2/c =3•mc = 3•9.10^-31•3•10^8 =8.2•10^-22 kg•m/s.