A photon of energy `1.12 MeV` splits into electron positron pair. The velocity of electron is (Neglect relativistic correction)

The relativistic mass of electron with velocity of light is :

A gamma ray photon creates an electron positron pair. If the rest mass energy of an electron is 0.5 MeV and the total kinetic energy of the electron positron pair is 0.78 MeV, then the energy of the gamma ray photon must be

A gamma ray photon creates an electron-positron pair. If the rest mass energy of an electron is 0.5 MeV and the total K.E. of the electron-position pair is 0.78 MeV , then the energy of the gamma ray photon must be.

The rest mass energy of electron or positron is (in MeV )

if an electron and a positron annihilitate , them the energy relasesed is

if an electron and a positron annihilitate , them the energy relasesed is