Physics
(a) State one similarity in the process of nuclear fission and fusion.
(b) State two differences between the process of nuclear fission and fusion.
Radioactivity
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Answer
(a) In both the process nuclear fission and fusion, the similarity is the release of energy due to loss in mass.
(b) Differences between nuclear fission and fusion are as follows —
| Nuclear Fission | Nuclear Fusion |
|---|---|
| In fission when neutrons are bombarded on a heavy nucleus, it splits in two nearly equal light fragments. | In fusion, at a very high temperature and high pressure two light nuclei combine to form a heavy nucleus. |
| This reaction is possible at ordinary temperature and ordinary pressure. | This reaction is possible only at a very high temperature (≈ 107 K) and a very high pressure. |
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Related Questions
Why is a very high temperature required for the process of nuclear fusion? State the approximate temperature required.
(a) Write one nuclear fusion reaction.
(b) State the approximate value of energy released in the reaction mentioned in part (a).
(c) Give reason for the release of energy stated in part (b).
Give two examples of nuclear fusion.
(a) Name two isotopes of uranium which are fissionable.
(b) Which of the isotope mentioned in part (a) above is easily fissionable? Give reason.
(c) State whether the neutron needed for fission reaction of the isotope mentioned in part (b) above, is slow or fast?