Unit 22 Solved Short Q/A | Nuclear Physics Class 12 Physics National book foundation| FIBSE 2025

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1. What are some of the potential benefits and drawbacks of using nuclear energy as a source of electricity compared to other forms of energy?

2. What happens to the atomic number and mass number of nucleus that:
(a) emits electron (beta decay)
(b) undergoes electron capture
(c) emits alpha particle

3. Why does the low energy alpha particle not make physical contact with the nucleus when an alpha particle is headed directly towards the nucleus of an atom?

4. An alpha particle has twice the charge of a beta particle. Why does the former deflect less than the latter when passing between electrically charged plates, assuming they both have the same speed?

5. Why uranium fuel needs to be enriched before use?

6. If U-238 undergoes alpha decay, what is the resulting nucleus?

7. How do chain reactions occur in nuclear fission?

8. How does the molecular weight difference between U-235 and U-238 hexafluoride molecules enable enrichment? What role do porous barriers play in the gaseous diffusion process?