Physics - Modern Physics Question with Solution | TestHub

Mass of ${}_1{\mathrm{H}}^2=2.01478\mathrm{amu}$ Mass of ${}_2{\mathrm{He}}^4=4.00388\mathrm{amu}$ Mass of two deuterium $=2\times 2.01478$ $=4.02956\mathrm{amu}$ Energy equivalent to ${}_2{\mathrm{H}}^2$ $\begin{array}{rl}& =4.02956\times 1.2\\ & =4.4\mathrm{MeV}\end{array}$ Energy equivalent to ${}_2{\mathrm{He}}^4$ $=4.00388\times 7=28\mathrm{MeV}$ $\text{Energy released }=(28-4.4)$ $=23.6\mathrm{MeV}$