Q 12-13-082JEE MainJEE Main 2023 (1 Feb, Shift 1)Easy
The masses of proton, neutron and helium nucleus are respectively $1.0073$ u, $1.0087$ u and $4.0015$ u. The binding energy of helium nucleus is
Answer: (B) $28.4\ \text{MeV}$
$\Delta m=2(1.0073)+2(1.0087)-4.0015=0.0305$ u; $BE=0.0305\times931\approx28.4$ MeV.
Solution by Sreeraj P, M.Sc Physics