NEET Physics: Class 12, Chapter 13: Nuclei questions with solutions

Q1. Mark out the incorrect statement:

1. A free neutron can transform itself into photon
2. A free proton can transform itself into neutron
3. In beta minus decay, the electron originates from nucleus
4. All of the above

Answer: All of the above

Each statement is incorrect. A free neutron cannot simply become a photon; a free proton cannot turn into a neutron without additional energy and particle balance; and in beta minus decay, the electron is created in the decay process, not pre-existing inside the nucleus.