Question

What is pair of production effect and electron-positron pair?

Answer 1

Pair production is a process in which a photon under special conditions breaks into an electron and a positron pair here positron is the antiparticle of electron which has mass same as that of electron and charge equal and opposite to that of electron while the process converse of pair production is called Annihilation in which a positron and an electron fuse to give two photons.