It has been estimated that the total power radiated by the sun is 3.8 xx 10^(26) J per second . The source of energy of stars is a thermonucleur fission reaction . Energy released in the process of fusion is due to mass defect . Q = Delta mc^(2) B.E. per nucleon of ""_(1)^(2) H and ""_(2)^(4) He and 1.1 MeV and 7 MeV respectively . If two deutrons nuclei react to form a single helium nucleus , then the energy released is :

It has been estimated that the total power radiated by the sun is 3.8

1.	It has been estimated that the total power radiated by the sun is 3.8 xx 10^(26) J per second . The source of energy of stars is a thermonucleur fission reaction . Energy released in the process of fusion is due to mass defect . Q = Delta mc^(2) B.E. per nucleon of ""_(1)^(2) H and ""_(2)^(4) He and 1.1 MeV and 7 MeV respectively . If two deutrons nuclei react to form a single helium nucleus , then the energy released is :
Answer» 13.9 Mev 26.9 Mev 23.6 Mev 19.2 Mev Solution :`Delta m = [ M_("PRODUCT nucleide") - M_("DAUGHTER nucleide")]` , Binding energy = `Deltam _("(AMU)") XX 931.5` Mev