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Double slit past paper questions

Physics 9702 · Superposition. Fringe spacing with λ = ax/D

It came up in 48 of 140 papers, for about 2 marks a paper when it does. It last came up in October/November 2025.

Often set with Coherence and interference conditions, Principle of superposition, Two-source interference experiments, Wave terms and phase difference.

49 questions, newest first

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

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

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