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JAMB Physics 2006 Question 7

Question 7

Radioactivity and Nuclear Physics

I. The number of neutrons released exceeds the number that caused the fission.
II. There is loss of mass.
III. Energy is produced
IV. Smaller nuclei merge to form larger nuclei.
Which of the statements above are correct about nuclear fission?

  1. A.I, II and IV only
  2. B.I, II and III only
  3. C.I, III and IV only
  4. D.II, III and IV only
Show the answer and explanation

Answer: B (I, II and III only)

Explanation

In fission a heavy nucleus splits, releasing more neutrons than it absorbed, with a loss of mass that appears as energy. Small nuclei joining together (IV) is fusion, so only I, II and III are correct.