A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is - (Given 1 u = 931 MeV)
A
2.67 MeV
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B
26.7 MeV
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C
6.675 MeV
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D
13.35 MeV
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Solution
The correct option is C 6.675 MeV 1H2+1H2→2He4 Mass defect =Δm=0.02866u Total energy =E=Δmc2=0.02866×931MeV =26.68MeV Energy liberated per u =EA=26.684=6.678MeV