Energy of each photon obtained in the pair production process will be if the mass of electron or positron is 1/2000 a.m.u-

The binding energy per nucleon for ._(3)Li^(7) will be, if the mass of ._(3)Li^(7) is 7.0163 a.m.u.

Calculate the amount of energy set free by the annigilation of an electron and a positron. Given that mass of electron = 0.00055 amu and positron = 0.00055 amu.

A positron of 1MeV collides with an electron of 1MeV and gets annihilated and the reaction produces two gamma- ray photons. If the effective mass of each photons is 0.0016amu, then the energy of each gamma- ray photon is about-

Statement-I : Coversionof a gamma photon into an electron and a positron is an example of pair production. Statement -II : Pair production refers to the creation of an elementary particle and its antiparticle,usually when a photon interacts with a nucleus.