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  • The mass of proton, neutron and helium nucleus are respectively 1.0073u, 1.0087u and 4.0015u. The binding energy of helium nucleus is:Option: 1 28.4M

The mass of proton, neutron and helium nucleus are respectively 1.0073u, 1.0087u and 4.0015u. The binding energy of helium nucleus is:

Option: 1

28.4MeV


Option: 2

 56.8MeV


Option: 3

14.2MeV


Option: 4

 7.1MeV


Answers (1)

\begin{aligned} & 2 \mathrm{P}+2 \mathrm{n}={ }_2^4 \mathrm{He}+\mathrm{E} \\ & \therefore \mathrm{B} . \mathrm{E}=[2 \times(1.0073+1.0087)-4.0015] \times 931 \\ & =0.0305 \times 931 \\ & =28.3955 \mathrm{MeV} \end{aligned}

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Ramraj Saini

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