A) the nucleus disintegrates
B) the molecules disintegrates
C) atoms become ionized
D) the nucleus get sufficient energy to overcome the strong forces of repulsion
Correct Answer: D
Solution :
In practise, nuclear fusion is very difficult process. This is so when positively charged nuclei come very close for fusion, the force of electrical repulsion between them becomes very strong. For fusion against this force, they require very high energy. To impart, so much energy to them, very high temperature and very high pressure is requried.
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