An electron with kinetic energy 2.00 MeV collides head-on with a stationary positron…
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
An electron with kinetic energy 2.00 MeV collides head-on with a stationary positron and they annihilate into two photons of equal energy. The energy of each photon is closest to
(a) 1.256MeV
(b) 0.511MeV
(c) 1.511MeV
(d) 2.000MeV