CUET · PHYSICS · PYQ PAPER 2025
Arrange the following nuclei in the ascending order of their stability.
(A) Oxygen (\( {}^{16}\text{O} \)) with binding energy 127.5 MeV
(B) Uranium (\( {}^{238}\text{U} \)) with binding energy 1808.8 MeV
(C) Helium (\( {}^{4}\text{He} \)) with binding energy 28.3 MeV
(D) Iron (\( {}^{56}\text{Fe} \)) with binding energy 490 MeV
Choose the correct answer from the options given below:
- A (C), (D), (A), (B)
- B (C), (A), (D), (B)
- C (C), (B), (A), (D)
- D (C), (A), (B), (D)
Answer & Solution
Correct Answer
(C) (C), (B), (A), (D)
Step-by-step Solution
Detailed explanation
\( \text{Binding energy per nucleon } (E_b/A) \text{ is a measure of stability.} \) \( (A)\text{ O: } E_b/A = 127.5 \text{ MeV} / 16 = 7.97 \text{ MeV/nucleon} \) \( (B)\text{ U: } E_b/A = 1808.8 \text{ MeV} / 238 = 7.60 \text{ MeV/nucleon} \)…
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