Gamma rays emitted by radioactive nuclei also exhibit measurable Compton scattering. Suppose a 0.511-MeV photon from a positron-electron annihilation scatters at 110 degree from a free elctron. a. What is the energies of the scatteted photon and the recoiling electron? b. Relative to the intial direction of the 0.511-MeV photon, what is the direction of the recoiling electron's velocity vector?

A green light wavelength = 530 nm shines on a metal. It is determined that the stopping potential is 1.5V.  a. calculate the binding energy of the metal. b. calculate the max speed of an ejected electron. c. calculate the minimum frequency of light that would expel electrons from the metal.

1. A system has a ground state energy of 2 eV.  The system is in an excited energy state with 10 eV of energy.  If the system transitions from the excited energy state to the ground state by emitting 1 eV photons, how many photons are emitted? a. Exactly 8 b. More than 8 c. More than 1 but less than 8 d. Exactly 1 e. There's no way to know for sure   2. In blackbody radiation, the wavelength that has the peak intensity a. Decreases as temperature increases b. Increases as temperature increases c. Doesn't change as temperature increases

3. What are K,L and M lines you discovered in the Moseley's law experi- ment ? 4. What is the Duane Hunt maximum x-ray frequency of a excitation voltage V = 6kV ? 5. Draw a basic shape of the x-ray absorption spectrum of a generic element, denote the Band a lines along with Duane-Hunt cutoff