Edexcel IAL · Physics · WPH12 · Waves and Particle Nature of Light
Topic Questions: 63 understand atomic line spectra in terms of transitions between discrete energy levels and understand how to calculate the frequency of radiation that could be emitted or absorbed in a transition between energy levels. — WPH12 Waves and Particle Nature of Light
29 WPH12 Waves and Particle Nature of Light topic questions are tagged to this syllabus point across 22 papers (2019–2026). 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 Waves and Particle Nature of Light syllabus point appears in 22 WPH12 papers across 2019–2026, contributing 29 topic questions and 68 marks. The most recent appearance is WPH12/01 January 2026. That equals 6.2% of the 468 topic questions and 6.0% of the 1,138 marks tagged to Waves and Particle Nature of Light. 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 |
|---|---|---|---|---|---|---|
| WPH12/01January 2026 · Edexcel IAL | Q3 Atomic Energy Levels - Edexcel IAL Physics Jan 2026 Q3 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/02January 2026 · Edexcel IAL | Q2 Energy Transitions - Edexcel IAL Physics Jan 2026 Q2 |
MCQ | MCQ · 1 part | 1 | Easy | Go to Practice Hub |
| WPH12/01October 2025 · Edexcel IAL | Q9 Atomic Energy Levels and Forbidden Transitions - Edexcel IAL Physics Oct 2025 Q9 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/02October 2025 · Edexcel IAL | Q11 Hydrogen Energy Level Transitions - Edexcel IAL Physics Oct 2025 Q11 |
FRQ | 1 part | 4 | Medium | Go to Practice Hub |
| WPH12/02October 2025 · Edexcel IAL | Q15 Photon Nature of Light vs Wave Nature - Edexcel IAL Physics Oct 2025 Q15 |
FRQ | 1 part | 6 | Hard | Go to Practice Hub |
| WPH12/01June 2025 · Edexcel IAL | Q5 Electron Transitions in Hydrogen Atom - Edexcel IAL Physics May 2025 Q5 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01June 2025 · Edexcel IAL | Q18 Mercury Atoms Photon Emission and UV Hardening of Glue - Edexcel IAL Physics May 2025 Q18 |
FRQ | 2 of 5 parts ((a), (c)) | 4 of 14 on the paper |
Medium | Go to Practice Hub |
| WPH12/01January 2025 · Edexcel IAL | Q9 Mercury Atom Energy Transitions - Edexcel IAL Physics Jan 2025 Q9 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01October 2024 · Edexcel IAL | Q2 Emission Line Spectrum - Edexcel IAL Physics Oct 2024 Q2 |
MCQ | MCQ · 1 part | 1 | Easy | Go to Practice Hub |
| WPH12/01June 2024 · Edexcel IAL | Q17 Quantum Atomic Transitions & Photoelectric Effect - Edexcel IAL Physics June 2024 Q17 |
FRQ | 1 of 4 parts ((a)(ii)) | 6 of 13 on the paper |
Easy | Go to Practice Hub |
| WPH12/01January 2024 · Edexcel IAL | Q10 Atomic Energy Levels - Edexcel IAL Physics Jan 2024 Q10 |
MCQ | MCQ · 1 part | 1 | Easy | Go to Practice Hub |
| WPH12/01October 2023 · Edexcel IAL | Q9 Hydrogen Energy Levels Frequency - Edexcel IAL Physics Oct 2023 Q9 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01June 2023 · Edexcel IAL | Q17 Hydrogen Energy Levels and Photoelectric Effect - Edexcel IAL Physics May 2023 Q17 |
FRQ | 2 of 5 parts ((a), (b)(ii)) | 4 of 14 on the paper |
Easy | Go to Practice Hub |
| WPH12/01January 2023 · Edexcel IAL | Q7 Atomic Energy Levels - Edexcel IAL Physics Jan 2023 Q7 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01October 2022 · Edexcel IAL | Q2 Atomic Transitions and Photon Wavelength - Edexcel IAL Physics Oct 2022 Q2 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01June 2022 · Edexcel IAL | Q7 Hydrogen Atom Energy Level Transitions - Edexcel IAL Physics June 2022 Q7 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01January 2022 · Edexcel IAL | Q18 Sirius A Radiation Power and Atomic Energy Transitions - Edexcel IAL Physics Jan 2022 Q18 |
FRQ | 2 of 3 parts ((a), (c)) | 6 of 10 on the paper |
Medium | Go to Practice Hub |
| WPH12/01October 2021 · Edexcel IAL | Q16 Atomic Emission Spectra and Gas Energy Levels - Edexcel IAL Physics Oct 2021 Q16 |
FRQ | 2 parts ((a), (b)) | 8 | Medium | Go to Practice Hub |
| WPH12/01June 2021 · Edexcel IAL | Q8 Atomic Energy Levels and Transitions - Edexcel IAL Physics June 2021 Q8 |
MCQ | MCQ · 1 part | 1 | Medium | Go to Practice Hub |
| WPH12/01January 2021 · Edexcel IAL | Q14 Hydrogen Energy Levels - Edexcel IAL Physics Jan 2021 Q14 |
FRQ | 1 part | 4 | Hard | Go to Practice Hub |
| WPH12/01October 2020 · Edexcel IAL | Q15 Bohr Model of Hydrogen and de Broglie Wavelength - Edexcel IAL Physics Oct 2020 Q15 |
FRQ | 1 of 2 parts ((a)) | 3 of 8 on the paper |
Medium | Go to Practice Hub |
| WPH12/01January 2020 · Edexcel IAL | Q18 Lightning Discharge Calculations and Spectroscopy - Edexcel IAL Physics Jan 2020 Q18 |
FRQ | 2 of 7 parts ((c)(i), (c)(ii)) | 5 of 16 on the paper |
Easy | Go to Practice Hub |
| WPH12/01October 2019 · Edexcel IAL | Q11 Hydrogen Energy Levels and Transitions - Edexcel IAL Physics Oct 2019 Q11 |
FRQ | 1 part | 3 | Medium | Go to Practice Hub |
| WPH12/01June 2019 · Edexcel IAL | Q16 Gas Discharge Tubes and Diffraction Gratings - Edexcel IAL Physics May 2019 Q16 |
FRQ | 1 of 3 parts ((a)) | 3 of 9 on the paper |
Easy | Go to Practice Hub |
Related topic questions in Waves and Particle Nature of Light
33 understand the terms amplitude, frequency, period, speed and wavelength
37 marks · 2019–2026
34 be able to use the wave equation
117 marks · 2019–2026
35 be able to describe longitudinal waves in terms of pressure variation and the displacement of molecules
15 marks · 2019–2026
36 be able to describe transverse waves
20 marks · 2019–2026
37 be able to draw and interpret graphs representing transverse and longitudinal waves including standing/stationary waves
47 marks · 2019–2026
38 CORE PRACTICAL 4: Determine the speed of sound in air using a 2-beam oscilloscope, signal generator, speaker and microphone
25 marks · 2019–2024
Topic question rules and edge cases
- How many topic questions cover this syllabus point?
- 24 question stems cover this subtopic across 22 papers, but only 29 tagged parts and 68 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 2019–2026. 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.