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(a) Explain the processes of nuclear f...

(a) Explain the processes of nuclear fission and nuclear fusion by using the plot of binding energy per nucleon (BE/A) versus the mass number A.
(b) A radioactive isotope has a hald -life of 10 years. How long will it take for the activity to reduce to 3.125%.

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### Solution: **(a) Explanation of Nuclear Fission and Nuclear Fusion:** 1. **Understanding Binding Energy per Nucleon (BE/A):** - The binding energy per nucleon is a measure of the stability of a nucleus. It is plotted against the mass number (A) of the nucleus. - The graph typically shows that lighter nuclei have lower binding energy per nucleon, while heavier nuclei reach a peak and then start to decrease. ...
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