Question
(a) What is radioactivity?
(b) What is nuclear fusion?
(b) What is nuclear fusion?
✓
Answer
(a) Radioactivity is the phenomenon due to which certain elements give out highly penetrating radiations spontaneously.
(b) The process of combining lighter nuclei (atomic weight less than 20 ) into heavier nuclei with the release of energy, is called nuclear fusion.
(b) The process of combining lighter nuclei (atomic weight less than 20 ) into heavier nuclei with the release of energy, is called nuclear fusion.
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