Question

During β decay of stationary nucleus, an electron is observed with a KE of 1.0 MeV. From this what can be concluded about Q value of the decay?

• A. It can be equal to 1MeV
• B. It can be less than 1MeV
• C. It can be greater than 1MeV
• D. All the above

Answer 1

The correct option is D

All the above

In β decay the energy released is in the form of KE if electron & the energy shared by antineutrino. The energy of antineutrino can be anything from 0 to a finite value.