A star converts all of its He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei ismass of He is 4.0026amu and mass of oxygen is 15.994 amu
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a
7.26 MeV
b
7 MeV
c
10.24 MeV
d
23.9 MeV
answer is C.
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Detailed Solution
Mass defect =4×4⋅0026−15⋅994=0⋅011E=Δmc2=0⋅011×931=10⋅24MeVSo, energy released by oxygen nuclei is 10 .24 MeV.
A star converts all of its He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei ismass of He is 4.0026amu and mass of oxygen is 15.994 amu