Physics (NTSE/Olympiad)  

6. Source of Energy

Sun "The Ultimate Source of Energy"

Sun "The Ultimate Source of Energy"
The source of the large amount of solar energy is due to fusion of lighter nuclei. About 90 percent of the solar mass is composed of hydrogen and helium and rest 10 percent contains other elements. The temperature of the interior of the sun is estimated to be about 2 × 107K.
The nuclei of hydrogen fuse together in the sun’s interior to produce helium and a huge amount of energy is released. It is estimated that 1g of hydrogen produces 620,000 million joules of energy.
The fusion process in the sun can be described by the equation.


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