In has been estimated that the total energy radiated by the sun is `3.8xx10^26` J per second. The source of energy of stars is a thermonuclear reaction called nuclear fusion. Fusion reactions are not controlled. It is presumed that the energy of stars is due to two processes called proton-proton cycle and carbon nitrogen cycle. Fusion cannot take place at ordinary temperature. This, hydrogen bomb uses a small fission bomb, which on explosion causes the temperature to rise very high about `10^7` K. We have yet to see how a hydrogen bomb can be used for peaceful life-sustaining purpose. Energy released in the process of fusion is due to mass defect. It is also called Q-value.
Q`=Deltamc^2`, `Deltam=`mass defect
Answer the following questions based on above passage:
Fusion reaction takes place at about:

Options

A. `3xx10^2`K
B. `3xx10^3`K
C. `3xx10^4`K
D. `3xx10^6`K

Answer

D