Verified Solution • 2025–26 Session
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QPages 440-441: Q9: HC Verma: Concepts of Physics - Volume 2 The Nucleus Pages 440-441: Q9 Solution: As the mass number A increases, the binding energy per nucleon…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often assume the binding energy per nucleon changes uniformly with A, e.g., always increasing or decreasing, and ignore the characteristic rise to a maximum near $A\approx56$ (iron) followed by a gradual decline. Remember the semi‑empirical mass formula: volume and surface terms cause the rise, while Coulomb repulsion and asymmetry terms cause the fall, so the trend depends on the specific value of $A$.
As the mass number A increases, the binding energy per nucleon in a nucleus
Multiple Choice Options
- A increases
- B decreases
- C remains the same
- D varies in a way that depends on the actual value of A.
Step-by-Step Verified Solution
**Answer:** (d) varies in a way that depends on the actual value of A.
**Step-by-Step Explanation:**
Binding energy per nucleon varies with mass number, peaking around iron.
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