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Q: What is the source of energy of the sun and other stars?
  • A. Combustion of Helium gas
  • B. Nuclear fusion
  • C. Nuclear fission
  • D. Combustion of Hydrogen gas
Correct Answer: Option B - Energy in the Sun and stars is generated by nuclear fusion. In nuclear fusion, two or more light nuclei join to form a heavy nucleus along with release of an extremely high amount of energy.
B. Energy in the Sun and stars is generated by nuclear fusion. In nuclear fusion, two or more light nuclei join to form a heavy nucleus along with release of an extremely high amount of energy.

Explanations:

Energy in the Sun and stars is generated by nuclear fusion. In nuclear fusion, two or more light nuclei join to form a heavy nucleus along with release of an extremely high amount of energy.