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Coherence and interference conditions past paper questions

Physics 9702 · Superposition. What two sources need for a steady fringe pattern

In Cambridge A Level Physics 9702, Coherence and interference conditions came up in 52 of the 140 papers on Paperstreak, for about 2 marks a paper when it does. It last came up in October/November 2025.

Often set with Wave equation, Double slit, Two-source interference experiments, Principle of superposition.

53 questions, newest first

  1. 9702/22/O/N/25 Question 4 part (c) · 1 mark
  2. 9702/13/M/J/25 Question 28 · 1 mark
  3. 9702/22/M/J/25 Question 3 part (b(ii)) · 1 mark
  4. 9702/12/F/M/25 Question 27 · 1 mark
  5. 9702/11/O/N/24 Question 27 · 1 mark
  6. 9702/21/O/N/24 Question 6 parts (a(i)) (b(ii)) · 3 marks
  7. 9702/11/M/J/24 Question 30 · 1 mark
  8. 9702/23/M/J/24 Question 4 part (d) · 3 marks
  9. 9702/12/F/M/24 Question 30 · 1 mark
  10. 9702/11/O/N/23 Question 28 · 1 mark
  11. 9702/12/M/J/23 Question 28 · 1 mark
  12. 9702/13/M/J/23 Question 28 · 1 mark
  13. 9702/21/M/J/23 Question 5 parts (b(i)) (c(i)) (c(ii)) · 3 marks
  14. 9702/12/F/M/23 Question 28 · 1 mark
  15. 9702/22/F/M/23 Question 5 part (b(i)) · 1 mark
  16. 9702/11/O/N/22 Question 29 · 1 mark
  17. 9702/12/O/N/22 Question 29 · 1 mark
  18. 9702/22/M/J/22 Question 5 parts (a) (b(i)) · 2 marks
  19. 9702/12/F/M/22 Question 24 · 1 mark
  20. 9702/11/O/N/21 Question 28 · 1 mark
  21. 9702/12/O/N/21 Question 29 · 1 mark
  22. 9702/12/M/J/21 Question 28 · 1 mark
  23. 9702/22/M/J/21 Question 4 parts (c(iii)) (c(v)) · 2 marks
  24. 9702/12/F/M/21 Question 28 · 1 mark
  25. 9702/11/O/N/20 Question 28 · 1 mark
  26. 9702/21/M/J/20 Question 4 part (b(ii)) · 2 marks
  27. 9702/23/M/J/20 Question 4 part (b) · 1 mark
  28. 9702/21/O/N/19 Question 5 parts (a(ii)) (d(ii)) · 2 marks
  29. 9702/23/O/N/19 Question 5 parts (a(i)) (a(ii)) · 2 marks
  30. 9702/12/M/J/19 Question 30 · 1 mark
  31. 9702/13/M/J/19 Question 28 · 1 mark
  32. 9702/21/M/J/19 Question 5 parts (c(i)) (c(ii)) · 2 marks
  33. 9702/22/F/M/19 Question 5 part (a(ii)) · 1 mark
  34. 9702/11/O/N/18 Question 28 · 1 mark
  35. 9702/12/O/N/18 Question 29 · 1 mark
  36. 9702/21/O/N/18 Question 4 parts (b(i)) (b(ii)) (b(v)) · 5 marks
  37. 9702/11/M/J/18 Question 26 · 1 mark
  38. 9702/21/M/J/18 Question 5 part (a(ii)) · 1 mark
  39. 9702/23/M/J/18 Question 5 part (b(ii)) · 3 marks
  40. 9702/12/F/M/18 Question 27 · 1 mark
  41. 9702/11/O/N/17 Question 28 · 1 mark
  42. 9702/13/O/N/17 Question 30 · 1 mark
  43. 9702/12/M/J/17 Question 29 · 1 mark
  44. 9702/13/M/J/17 Question 28 · 1 mark
  45. 9702/22/M/J/17 Question 6 parts (a(ii)) (c(i)) (c(ii)) · 5 marks
  46. 9702/23/M/J/17 Question 5 part (a(ii)) · 3 marks
  47. 9702/12/O/N/16 Question 27 · 1 mark
  48. 9702/22/O/N/16 Question 4 parts (b(i)) (b(ii)) (b(iv)) · 5 marks
  49. 9702/12/M/J/16 Question 27 · 1 mark
  50. 9702/12/M/J/16 Question 28 · 1 mark
  51. 9702/13/M/J/16 Question 28 · 1 mark
  52. 9702/22/M/J/16 Question 5 part (a) · 3 marks
  53. 9702/22/F/M/16 Question 4 part (b(ii)) · 3 marks

More in Superposition: Principle of superposition, Stationary wave experiments, Nodes and antinodes, Diffraction, Two-source interference experiments, Double slit, Diffraction grating.

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