Physics
(i) Differentiate between nuclear fusion and nuclear fission.
(ii) State one safety precaution in the disposal of nuclear waste.
Answer
(i) The difference between nuclear fusion and nuclear fission is as follows :
| Nuclear fusion | Nuclear fission |
|---|---|
| Nuclear fusion is the process of combining light nuclei to form a larger nuclei at a very high temperature and pressure with the release of energy | Nuclear fission is the process of breaking of a heavy nucleus in two nearly equal fragments with the release of energy. |
| This reaction is possible only at a very high temperature (≈ 107 K) and a very pressure. | This reaction is possible at ordinary temperature and ordinary pressure. |
(ii) The nuclear waste should be enclosed in thick casks and buried in deep underground places far from populated areas as they can be harmful.
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