Given an example of production of electrons by photons

Give an example of production of electron by photons.

Give example of production of (i) electron by a photon and (ii) photon by an electron

Given examples of production of electron from photon and production of photon from electron.

Give examples of production of -(i) photons from electrons (ii) electrons from photons.

During collision of electrons and photons,

During collision of electrons and photons,

For pair production i.e. for the production of electron and positron, the incident photon must have a minimum frequency of the order of