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| Q. |
Which one of the following takes place during a nuclear fusion? |
| A. | a heavy nucleus bombarded by neutrons breaks up |
| B. | a heavy nucleus breaks up spontaneously |
| C. | two light nuclei combine to form a heavy nucleus |
| D. | a light nucleus breaks up spontaneously |
| Answer» C. two light nuclei combine to form a heavy nucleus | |
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Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass between the products and reactants is manifested as the release of large amounts of energy. Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars. |
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