CIE IAL · Physics · 9702 P1 · Doppler effect for sound waves
Topic Questions: 1 understand that when a source of sound waves moves relative to a stationary observer, the observed frequency is different from the source frequency (understanding of the Doppler effect for a stationary source and a moving observer is not required) — 9702 P1 Doppler effect for sound waves
5 9702 P1 Doppler effect for sound waves topic questions are tagged to this syllabus point across 5 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.
Core finding
This Doppler effect for sound waves syllabus point appears in 5 9702 P1 papers across 2025–2026, contributing 5 topic questions and 5 marks. The most recent appearance is 9702/11 May/June 2026. That equals 45.5% of the 11 topic questions and 45.5% of the 11 marks tagged to Doppler effect for sound waves. 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 |
|---|---|---|---|---|---|---|
| 9702/11May/June 2026 · CIE IAL | Q24 Doppler Shift for Approaching Constant Velocity Source - CIE Physics 2026 Jun Paper 11 Q24 |
FRQ | 1 part | 1 | Easy | Go to Practice Hub |
| 9702/12May/June 2026 · CIE IAL | Q24 Doppler Effect Velocity of Sound Source - CIE Physics 2026 Jun Paper 12 Q24 |
FRQ | 1 part | 1 | Medium | Go to Practice Hub |
| 9702/13May/June 2026 · CIE IAL | Q24 Doppler Effect Observed Frequency - CIE Physics 2026 Jun Paper 13 Q24 |
FRQ | 1 part | 1 | Easy | Go to Practice Hub |
| 9702/12October/November 2025 · CIE IAL | Q27 Doppler Effect Sound Calculation - CIE AS Physics 2025 Nov Paper 12 Q27 |
FRQ | 1 part | 1 | Medium | Go to Practice Hub |
| 9702/11May/June 2025 · CIE IAL | Q24 Doppler Effect Speed and Direction of Aircraft - CIE AS Physics 2025 Jun Paper 11 Q24 |
FRQ | 1 part | 1 | Easy | Go to Practice Hub |
Related topic questions in Doppler effect for sound waves
Topic question rules and edge cases
- How many topic questions cover this syllabus point?
- 5 question stems cover this subtopic across 5 papers, but only 5 tagged parts and 5 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.