Exam-style question
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In a alpha beta gamma comparison, which option best applies the AQA A-Level Physics objective to required practical 12: investigate the inverse-square law for gamma radiation. while keeping isotope notation, radiation type, activity and safety reasoning distinct?.
- A.nuclear-case-50: Apply Required practical 12: investigate the inverse-square law for gamma radiation. in Alpha, beta and gamma radiation.
- B.nuclear-case-50: Mix Alpha, beta and gamma radiation with a different nuclear model and ignore the measured quantity.
- C.nuclear-case-50: Use a generic radiation phrase without isotope, activity or count-rate reasoning.
- D.nuclear-case-50: 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-50: Apply Required practical 12: investigate the inverse-square law for gamma radiation.
- in Alpha, beta and gamma radiation.
Explanation
Why this works
It is correct because it directly supports the approved objective: Required practical 12: investigate the inverse-square law for gamma radiation. 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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