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)`

Options

A. 2.67 MeV
B. 26.7 MeV
C. 6.675 MeV
D. 13.35 MeV

Answer

C

Explanation

`""_(1)H^(2)+""_(1)H^(2)to ""_(2)He^(4)`
Mass defect `=Deltam=0.02866u`
Total energy `=E=Delta mc^(2)=0.02866xx931` MeV
`=26.68` MeV
Energy liberated per `u=(E)/(A)=(26.68)/(4)=6.678` MeV