Exam-style question
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In a nuclear radius estimate, which option best applies the AQA A-Level Physics objective to write balanced nuclear equations for alpha and beta decay. while keeping isotope notation, radiation type, activity and safety reasoning distinct?.
- A.nuclear-case-27: Apply Write balanced nuclear equations for alpha and beta decay. in Nuclear instability.
- B.nuclear-case-27: Mix Nuclear instability with a different nuclear model and ignore the measured quantity.
- C.nuclear-case-27: Use a generic radiation phrase without isotope, activity or count-rate reasoning.
- D.nuclear-case-27: Treat Radioactivity as simple recall and omit the A-Level Physics distinction.
Model answer
What a good answer should say
- The correct option is nuclear-case-27: Apply Write balanced nuclear equations for alpha and beta decay.
- in Nuclear instability.
Explanation
Why this works
It is correct because it directly supports the approved objective: Write balanced nuclear equations for alpha and beta decay. The other options are weaker because they confuse radiation type, isotope structure, count-rate interpretation, half-life reasoning, shielding, contamination or irradiation with a nearby but different nuclear physics idea.
Common mistake
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