AQA A-Level Physics Paper 3 (3BB), June 2025

Every question from AQA A-Level Physics Paper 3 (3BB), June 2025 (7408): 4 questions, 35 marks, each with its mark scheme and topic.

Original question paper

1. Question 1 9 marks

   Complete ray paths into the eye, identify the component enabling accommodation, calculate focal length at the near point using an accommodation graph, and explain hypermetropia variation with age.

   Optional topics · Practical skills · 3.10 Medical physics (A-level only) · Data analysis

2. Question 2 11 marks

   Calculate the decay and extraction of technetium-99m from a molybdenum-99 generator and compare MUGA and TTE heart imaging techniques.

   Physics · Optional topics · Practical skills · 3.8 Nuclear physics (A-level only) · 3.10 Medical physics (A-level only) · Data analysis

3. Question 3 7 marks

   Define the threshold of hearing, calculate the incident power on an eardrum using an equal loudness curve, and sketch a higher-intensity equal loudness curve.

   Optional topics · 3.10 Medical physics (A-level only)

4. Question 4 8 marks

   Explain focal spot size considerations, methods to limit patient X-ray exposure, and calculate the transmission percentage of X-rays through a femur cross-section.

   Optional topics · 3.10 Medical physics (A-level only)

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