A) nuclear fusion
B) nuclear fission
C) gravitational contraction
D) combustion
Correct Answer: A
Solution :
When two lighter nuclei moving at very high speeds fuse together to from a single heavier nucleus, then this phenomenon is called nuclear fusion. The source of huge solar energy is the fusion of lighter nuclei. About 90% of the solar mass is composed of hydrogen and helium and the rest 10% contains other elements, most of which are light elements. The estimated temperature of the interior of the sun is about \[\text{2 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{7}}}\text{K}\text{.}\] At such a high temperature the atoms of all elements present in the sun are completely ionised to form a hot plasma. Fusion of hydrogen nuclei into helium nuclei is continuously taking place in this plasma, with the continuous liberation of energy.
You need to login to perform this action.
You will be redirected in
3 sec
