A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion

Question

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 $u$ of reaction is (given $1 u=931 \mathrm{MeV}$ )\

Professor PC Thomas Classes · Answer

As ${ }_{1}^{2} \mathrm{H}+{ }_{1}^{2} \mathrm{H} ightarrow{ }_{2}^{4} \mathrm{He}$ \ Here, $\Delta \mathrm{M}=0.02866 \mathrm{u}$\ $	herefore$ The energy liberated per u is\ $=\frac{\Delta \mathrm{M} 	imes 931}{4} \mathrm{MeV}$\ $=\frac{0.02866 	imes 931}{4} \mathrm{MeV}=\frac{26.7}{4} \mathrm{MeV}=6.675 \mathrm{MeV}$\