plumiFibre optics and endoscopy: AQA A‑Level Physics questions
AQA A-Level Physics past-paper questions on 3.10.4.2 Fibre optics and endoscopy, 2008–2025, with mark schemes and examiner’s reports where available.
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Q03.1
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All 11 questions on Fibre optics and endoscopy, as a list
- June 2024, Paper 3 Medical physics, Q03.1 (4 marks): Name the two types of optical fibre bundle used in an endoscope. Go on to discuss whether the optical fibres in either of these bundles require cladding. [4 mar
- June 2024, Paper 3 Medical physics, Q03.2 (6 marks): Modal and material dispersion can cause problems in fibre-optic communications. Discuss why the methods used to reduce modal and material dispersion are not req
- June 2018, Paper 3 Medical physics, Q01.1 (4 marks): An endoscope is used to view an area inside the body. The endoscope contains two bundles of optical fibres. Name each bundle and explain its use in the process.
- June 2018, Paper 3 Medical physics, Q01.2 (2 marks): A single optical fibre is placed in air. The optical fibre has a core surrounded by cladding. The critical angle is 75° at the core-cladding boundary. Complete
- June 2015, PHYA5 Medical physics (old spec), Q4(a)(i) (2 marks): State the use of the coherent bundle and describe its arrangement of fibres. [2 marks]
- June 2015, PHYA5 Medical physics (old spec), Q4(a)(ii) (2 marks): State the use of the non-coherent bundle and describe its arrangement of fibres. [2 marks]
- June 2015, PHYA5 Medical physics (old spec), Q4(b) (1 mark): Each fibre has a core surrounded by cladding. Calculate the critical angle at the core–cladding interface. refractive index of core = 1.52 refractive index of c
- June 2012, PHYA5 Medical physics (old spec), Q3(a) (3 marks): Figure 1 shows the cross-section through a clad optical fibre which has a core of refractive index 1.50. Figure 1 Complete the graph below to show how the refra
- June 2012, PHYA5 Medical physics (old spec), Q3(b) (2 marks): In the optical system of a flexible endoscope there are two types of fibre bundles, coherent and non-coherent. Explain the purpose of each of these two types of
- June 2011, PHYA5 Medical physics (old spec), Q3(a) (4 marks): Name the two bundles. For each bundle state clearly the arrangement of the fibres and explain its purpose in the operation of the endoscope. Bundle 1 Bundle 2
- June 2011, PHYA5 Medical physics (old spec), Q3(b) (1 mark): Each fibre has a core surrounded by cladding. Calculate the critical angle at the core – cladding interface of a fibre. refractive index of core = 1.60 refracti
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