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The source of energy of stars is nuclear...

The source of energy of stars is nuclear fusion. Fusion reaction occurs at very high temperature, about `10^(7) `. Energy released in the process of fusion is due to mass defect. It is also called `Q`-value. `Q = Delta mc^(2), Delta m =` mass defect.
Fusion reaction takes place at about

A

`9 xx 10^(2) K`

B

`3 xx 10^(3) K`

C

`3 xx 10^(4) K`

D

`3 xx 10^(6) K`

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The correct Answer is:
D
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