It is also possible for a photon to give up its quantum?energy?to the formation of a particle-antiparticle pair in its interaction with matter. The?rest mass energy?of an electron is 0.511 MeV, so the threshold for electron-positron pair production is 1.02 MeV.
116) What is the rest mass energy of an electron?
Answer is:
0.51 MeV
Explanation:
Related Atoms and Nuclei MCQ with Answers
Answer is:
7/8 part of the mass of the substance disintegrates in 30 days
Explanation:
The half life of a radioactive substance is 10 days. This means that 7/8 part of the mass of the substance disintegrates in 30 days
Answer is:
the strength of the nuclear force between the nucleons of its atoms
Explanation:
The half-life of a radioactive substance depends upon the strength of the nuclear force between the nucleons of its atoms
Answer is:
1:1
Explanation:
the rate of disintegration is proportional to number of radioactive atoms present initially in source
Answer is:
91234
Explanation:
Beta-minus emission changes a neutron into a proton, so the atomic number rises by one. The mass doesn't change