A) fusion of heavy nuclei
B) fission of heavy nuclei
C) fusion of hydrogen nuclei
D) fission of hydrogen nuclei
Correct Answer: C
Solution :
About 74% of the suns mass is hydrogen, 25% is helium and the rest is made up of trace quantities of heavier elements. It generates energy by nuclear fusion of hydrogen nuclei into helium and is in a state of hydrostatic balance neither contracting nor expanding over time.
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