Draw the graph showing the variation of binding energy per nucleon with mass number of different nuclei. State two inferences from this graph.

Define the terms binding energy for a nucleus and state the relation between the binding energy and mass defect.In nuclear reaction the $B.E$ per nucleon of the product nucleus/ nuclei is more than that for the original nucleus/nuclei. Is the nuclear reaction exothermic or endothermic in nature? Justify your choice.

Estimate the amount of energy in electron volt that will be available if $1 \mathrm{amu}$ of mass is converted into energy.

Given $1 \mathrm{amu}=1.6605\times {10}^{-24} \mathrm{gm}, 1 \mathrm{eV}=1.604\times {10}^{-12}\mathrm{erg}$