At photon energies above 10 MeV in a block of lead, what atomic process is responsible for creating.

At photon energies aloft 10 MeV in a stop of control, what atomic regularity is chargeable on for creating the most subordinate electrons?

Write down an equation of the moderate and nal energies of the photons to the scattering angle θ during the regularity of Compton scattering