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Binding energy per nucleons vs mass curv...

Binding energy per nucleons vs mass curve for nucleus is shown in the figure `W,X,Y`and `Z` are four nuclei indicated on the curve . The process that would release energy is

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The correct Answer is:
B
Energy is released in a process when total binding energy of the nucleus (= binding energy per nucleon xx number of nucleons) is increased or we can say, when total binding energy of products is more than the reactants. By calculation we can see that only in option (c), this happens. Given, `Wrarr2Y`
Binding energy of reactants `=120xx7.5=900MeV`
and binding energy of products `=2(60xx8.5)=1020MeVgt900MeV`
:. The correct option is (b).
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