# Topic Questions: 1 recall and use $d\sin\theta = n\lambda$ — 9702 P1 The diffraction grating > 10 9702 P1 The diffraction grating topic questions (10 marks) on 1 recall and use … — 9 papers, 2025–2026. Open the exact question in the original paper. - Canonical HTML: https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/the-diffraction-grating/1-recall-and-use-d-sin-theta-n-lambda/ - Markdown mirror: https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/the-diffraction-grating/1-recall-and-use-d-sin-theta-n-lambda/index.md --- CIE IAL · Physics · 9702 P1 · The diffraction grating 10 9702 P1 The diffraction grating topic questions are tagged to this syllabus point across 9 papers (2025–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved. - 10 topic questions - 9 papers - 10 tagged marks - 100.0% of topic questions - 100.0% of topic marks - 2025–2026 - Syllabus 2025–2027 - [All 9702 P1 The diffraction grating topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/the-diffraction-grating/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This The diffraction grating syllabus point appears in 9 9702 P1 papers across 2025–2026, contributing 10 topic questions and 10 marks.** The most recent appearance is 9702/12 May/June 2026. That equals 100.0% of the 10 topic questions and 100.0% of the 10 marks tagged to The diffraction grating. Only parts tagged to this subtopic are counted, so a four-part question can contribute one item and one part's marks. The table lists every matching question, its tagged parts and marks, with a link back to the paper page. Sessions are newest first, so the statement can be traced back through the full paper history. ## Topic questions by session Newest sessions first. Parts and marks count only the parts tagged to this subtopic; “x of y parts” shows how much of the question is tagged elsewhere. Select the paper cell to open the matching question on the paper page, or use **Go to Practice Hub** to answer that exact question in the Interactive Practice Hub. | Paper | Question | Type | Parts | Marks | Difficulty | Practice | | --- | --- | --- | --- | --- | --- | --- | | [**9702/12** May/June 2026 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2026-may-june-9702-12/#q-27) | **Q27** Ratio of Wavelengths in Diffraction Grating Maxima - CIE Physics 2026 Jun Paper 12 Q27 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=dff8c5d1-5de5-49c0-b417-97a49ecae26e&question_id=4518662c-7eb9-4725-9047-7468bd200fff&source_detail=9702%2F12+May%2FJune+2026) | | [**9702/13** May/June 2026 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2026-may-june-9702-13/#q-28) | **Q28** Diffraction Pattern of White Light - CIE Physics 2026 Jun Paper 13 Q28 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b1c6e9e0-2b9a-46bc-95ba-9424df870b39&question_id=ebe28342-fe30-4cd3-be42-11112a92e18f&source_detail=9702%2F13+May%2FJune+2026) | | [**9702/13** May/June 2026 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2026-may-june-9702-13/#q-29) | **Q29** Angle Between Diffracted Rays from Grating - CIE Physics 2026 Jun Paper 13 Q29 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b1c6e9e0-2b9a-46bc-95ba-9424df870b39&question_id=88b4e3d4-8980-43ec-9434-84e2189abd05&source_detail=9702%2F13+May%2FJune+2026) | | [**9702/11** October/November 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-october-november-9702-11/#q-30) | **Q30** Highest Order Diffraction Maximum - CIE Physics 2025 Nov Paper 11 Q30 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=924eca36-7f76-4bd9-bfca-c73eef3ca841&question_id=9d928c93-cdfa-4a18-8676-268f9b854d4c&source_detail=9702%2F11+October%2FNovember+2025) | | [**9702/12** October/November 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-october-november-9702-12/#q-29) | **Q29** Diffraction Grating Formula Quantities - CIE AS Physics 2025 Nov Paper 12 Q29 | FRQ | 1 part | 1 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a9354265-4ad0-4b45-86d5-ea844b7fc508&question_id=38399b5d-8ba5-4bb6-aacc-bb6c56655b2e&source_detail=9702%2F12+October%2FNovember+2025) | | [**9702/13** October/November 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-october-november-9702-13/#q-30) | **Q30** Maximum Order of Diffraction for Grating - CIE AS Physics 2025 Winter Paper 13 Q30 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e008d23b-4651-402b-b889-f33aa055a6e8&question_id=58f116a6-a8cf-45c7-87bc-122323b882e2&source_detail=9702%2F13+October%2FNovember+2025) | | [**9702/14** October/November 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-october-november-9702-14/#q-30) | **Q30** Total Number of Maxima from Diffraction Grating - CIE Physics 2025 Nov Paper 14 Q30 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=8d338983-d025-4544-9fad-eeb58b6137e4&question_id=2d6ef247-1b4f-426e-943b-9a260d3724e8&source_detail=9702%2F14+October%2FNovember+2025) | | [**9702/11** May/June 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-may-june-9702-11/#q-30) | **Q30** Diffraction Grating Second-Order Maximum Angle - CIE AS Physics 2025 Jun Paper 11 Q30 | FRQ | 1 part | 1 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=325aa048-bfe6-485f-9b5e-526096d74ef8&question_id=6b7763dc-0a3d-4133-ad33-5df4863d2115&source_detail=9702%2F11+May%2FJune+2025) | | [**9702/12** May/June 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-may-june-9702-12/#q-29) | **Q29** Diffraction Grating Wavelength from Graph Gradient - CIE Physics 2025 Jun Paper 12 Q29 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b4660d66-a150-4696-975b-81801f6095c2&question_id=393c7fa8-4895-4818-aef8-0145c0cc13e5&source_detail=9702%2F12+May%2FJune+2025) | | [**9702/14** May/June 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-1/2025-may-june-9702-14/#q-28) | **Q28** Wavelength Determination Using Diffraction Grating - CIE Physics 2025 Jun Paper 14 Q28 | FRQ | 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=2106ff7e-11fe-46fe-a4ec-d7c6bb2b24c8&question_id=f4434ba0-203f-4bb0-a350-2cd914a7f5d5&source_detail=9702%2F14+May%2FJune+2025) | ## Related topic questions in The diffraction grating - [2 describe the use of a diffraction grating to determine the wavelength of light (the structure and use of the spectrometer are not included)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/the-diffraction-grating/2-describe-the-use-of-a-diffraction-grating-to-determine-the-wavelength-of-light-the/) — 2 question items · 2 papers — 2 marks · 2025–2026 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 10 question stems cover this subtopic across 9 papers, but only 10 tagged parts and 10 marks belong to it. Other parts of the same questions are assessed under different statements and are excluded from this page. **Which papers include this subtopic?** The table lists every matching session from 2025–2026. Each row links to the question anchor on the paper page, where the full paper context and practice entry point are available. **Why can one question appear under several subtopics?** The parts of one question can assess different syllabus statements. Each part is counted under its own subtopics, so the same question stem can appear on several subtopic pages while each page lists only the parts and marks tagged to that statement. **Can I practise these questions with AI marking?** Yes. Open a paper from the table and use the Interactive Practice Hub entry point. The page itself is static HTML so search engines and retrieval agents can read the full question list without executing JavaScript. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/the-diffraction-grating/1-recall-and-use-d-sin-theta-n-lambda/