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Nuclei — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsNuclei1 Mark
MCQ
As the mass number $A$ increases, the binding energy per nucleon in a nucleus:
  • A
    Increases.
  • B
    Decreases.
  • C
    Remains the same.
  • ✓
    Varies in a way that depends on the actual value of $A.$
✓

Answer

Correct option: D.
Varies in a way that depends on the actual value of $A.$
Binding energy per nucleon in a nucleus first increases with increasing mass number $(A)$ and reaches a maximum of $8.7\ MeV$ for A $(50 - 80)$. Then, again it slowly starts decreasing with the increase in $A$ and drops to the value of $7.5\ MeV.$

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