plumiAbsorption of X-rays: AQA A‑Level Physics questions
AQA A-Level Physics past-paper questions on 3.10.5.3 Absorption of X-rays, 2008–2025, with mark schemes and examiner’s reports where available.
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Q04.3
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All 12 questions on Absorption of X-rays, as a list
- June 2025, Paper 3 Medical physics, Q04.3 (3 marks): Figure 6 shows a scale diagram of a cross-section through a human bone called a femur. Figure 6 A dashed line has been drawn from point A to point B through the
- June 2023, Paper 3 Medical physics, Q05.1 (6 marks): Figure 6 shows an X-ray image of a chest on photographic film. Figure 7 shows a diagram of a horizontal cross-section of the chest along the dashed line in Figu
- June 2022, Paper 3 Medical physics, Q02.2 (5 marks): Calculate an estimate for the X-ray energy that is absorbed by the bone. [5 marks] energy absorbed = J
- June 2022, Paper 3 Medical physics, Q02.3 (2 marks): State two reasons why the estimate of energy absorption in Question 02.2 may be greater than the actual value. [2 marks] 1 2
- November 2020, Paper 3 Medical physics, Q03.1 (4 marks): Deduce whether photons of energy 100 keV or 500 keV are better for treating a brain tumour at a depth of 11 cm. [4 marks]
- November 2020, Paper 3 Medical physics, Q03.2 (2 marks): Metal filters are used in X-ray machines to limit the damage to healthy tissues. Table 2 gives data for possible filter materials. Table 2 Energy / keV Linear a
- June 2018, Paper 3 Medical physics, Q05.2 (1 mark): Lead is commonly used as shielding when using X-rays due to its small half-value thickness. Which statement gives the correct meaning of half-value thickness? T
- June 2018, Paper 3 Medical physics, Q05.3 (4 marks): The half-value thickness of lead for 500 keV X-rays is 4.2 × 10−3 m Calculate the mass attenuation coefficient of lead for 500 keV X-rays. State an appropriate
- June 2016, PHYA5 Medical physics (old spec), Q4(b)(i) (1 mark): Explain what is meant by half-value thickness. [1 mark] ______________________________________________________________________________ _________________________
- June 2016, PHYA5 Medical physics (old spec), Q4(b)(ii) (1 mark): Show that for 50 keV X-ray photons, the attenuation coefficient of bone μ is 0.046 mm–1. [1 mark]
- June 2016, PHYA5 Medical physics (old spec), Q4(b)(iii) (2 marks): Copyright © 2016 AQA and its licensors. All rights reserved. 4 (b) (iii) A beam of 50 keV X-ray photons is incident on a bone of thickness 12 mm. Calculate the
- June 2014, PHYA5 Medical physics (old spec), Q4(b) (5 marks): When a monochromatic beam of X-ray photons is passed through an aluminium sheet of thickness 2.7 mm, its intensity is reduced by 8.3%. Calculate the mass attenu
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