A) 28.4 MeV
B) 20.8 MeV
C) 27.3 MeV
D) 14.2 MeV
Correct Answer: A
Solution :
Mass defect \[\Delta m=2({{m}_{n}}+{{m}_{p}})-{{m}_{He}}\] (as helium nucleus has two-protons and two neutrons) \[\Delta m = 2 \left( 1.0087 +1.0073 \right) - 4.0015\] \[=\,\,\,4.032-4.0015=0.0305\] Binding energy \[{{\operatorname{E}}_{B}} = \,\Delta m\times 931 MeV\] \[= \,0.0305 \times 931 = 28.4 MeV\]You need to login to perform this action.
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