JCECE Engineering JCECE Engineering Solved Paper-2002

  • question_answer
    Source of energy in sun is caused by:

    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 sun's 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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