# Topic Questions: • use the correct units throughout — WPH16 Analysis > 51 WPH16 Analysis topic questions (180 marks) on use the correct units throughout — 20 papers, 2020–2026. Open the exact question in the original paper. - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/use-the-correct-units-throughout/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/use-the-correct-units-throughout/index.md --- Edexcel IAL · Physics · WPH16 · Analysis 51 WPH16 Analysis topic questions are tagged to this syllabus point across 20 papers (2020–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved. - 51 topic questions - 20 papers - 180 tagged marks - 19.9% of topic questions - 23.4% of topic marks - 2020–2026 - Syllabus 2018–current - [All WPH16 Analysis topic questions](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This Analysis syllabus point appears in 20 WPH16 papers across 2020–2026, contributing 51 topic questions and 180 marks.** The most recent appearance is WPH16/01 January 2026. That equals 19.9% of the 256 topic questions and 23.4% of the 768 marks tagged to Analysis. 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 | | --- | --- | --- | --- | --- | --- | --- | | [**WPH16/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2026-january-wph16-01/#q-3) | **Q3** Anemometer and Wind Speed Investigation - Edexcel IAL Physics Jan 2026 Q3 | FRQ | 2 of 7 parts ((a)(i), (b)(ii)) | 10 of 22 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e389a7ab-6b3b-4871-912a-789e04ed24a2&question_id=38ad9cb5-6020-466d-987e-9e91507ca356&source_detail=WPH16%2F01+January+2026) | | [**WPH16/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2026-january-wph16-01/#q-4) | **Q4** Density of a Metal Cone - Edexcel IAL Physics Jan 2026 Q4 | FRQ | 1 of 4 parts ((b)(i)) | 4 of 13 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e389a7ab-6b3b-4871-912a-789e04ed24a2&question_id=8db061ad-9836-448f-9756-95c3d4ee8491&source_detail=WPH16%2F01+January+2026) | | [**WPH16/02** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2026-january-wph16-02/#q-4) | **Q4** Uncertainty and Density of Metal Ring - Edexcel IAL Physics Jan 2026 Q4 | FRQ | 1 of 6 parts ((c)(i)) | 2 of 17 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=114c84fd-3781-4813-97ed-ac80839b4d94&question_id=cb18f71b-d833-4de4-9b54-e69ba90ca099&source_detail=WPH16%2F02+January+2026) | | [**WPH16/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-01/#q-3) | **Q3** Capacitor Discharge Practical - Edexcel IAL Physics Oct 2025 Q3 | FRQ | 1 of 5 parts ((b)(ii)) | 5 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=60c5df21-6537-4be2-9a42-e63ddd5179e3&question_id=007854e4-e25c-4f25-a4dd-e4bf6f84c114&source_detail=WPH16%2F01+October+2025) | | [**WPH16/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-01/#q-4) | **Q4** Metal Wire Vibration Practical - Edexcel IAL Physics Oct 2025 Q4 | FRQ | 1 of 5 parts ((c)(i)) | 2 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=60c5df21-6537-4be2-9a42-e63ddd5179e3&question_id=3feb3ae6-4b65-494f-9576-86df5056e8ed&source_detail=WPH16%2F01+October+2025) | | [**WPH16/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-02/#q-2) | **Q2** Current-carrying Coil Investigation - Edexcel IAL Physics Oct 2025 Q2 | FRQ | 1 of 3 parts ((a)) | 3 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fbd8089b-e6b8-4998-a27c-dfc781df83f9&question_id=3e0e559a-f4d4-46aa-be47-0f3097f16ca9&source_detail=WPH16%2F02+October+2025) | | [**WPH16/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-02/#q-3) | **Q3** Capacitor Discharge Investigation - Edexcel IAL Physics Oct 2025 Q3 | FRQ | 1 of 5 parts ((b)(ii)) | 5 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fbd8089b-e6b8-4998-a27c-dfc781df83f9&question_id=23efb6e5-2a03-4e32-a6b7-b559c26dad61&source_detail=WPH16%2F02+October+2025) | | [**WPH16/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-02/#q-4) | **Q4** Metal Wire Vibration - Edexcel IAL Physics Oct 2025 Q4 | FRQ | 1 of 5 parts ((c)(i)) | 2 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fbd8089b-e6b8-4998-a27c-dfc781df83f9&question_id=7ff4f453-c28d-49ad-9bcc-025873fe9bf1&source_detail=WPH16%2F02+October+2025) | | [**WPH16/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-june-wph16-01/#q-3) | **Q3** Light Absorption by Glass - Edexcel IAL Physics Jun 2025 Q3 | FRQ | 2 of 6 parts ((c)(ii), (c)(iv)) | 9 of 18 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=81287a09-8463-47ae-83e2-02eb0f39243c&question_id=be4a137d-c133-46aa-a31f-dbfeb984c6b5&source_detail=WPH16%2F01+June+2025) | | [**WPH16/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-january-wph16-01/#q-1) | **Q1** Pressure and Temperature of Air - Edexcel IAL Physics Jan 2025 Q1 | FRQ | 1 of 5 parts ((c)(iii)) | 4 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=bcfaeca5-738a-4114-87ca-5ead774920d1&question_id=e86782c5-797f-4b8e-8615-1d260829058d&source_detail=WPH16%2F01+January+2025) | | [**WPH16/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-january-wph16-01/#q-4) | **Q4** Rolling Sphere and Gravity Determination - Edexcel IAL Physics Jan 2025 Q4 | FRQ | 1 of 5 parts ((c)(i)) | 2 of 13 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=bcfaeca5-738a-4114-87ca-5ead774920d1&question_id=804e60af-ba65-428d-ba7a-a9544b1ffc72&source_detail=WPH16%2F01+January+2025) | | [**WPH16/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-october-wph16-01/#q-3) | **Q3** Stellar Luminosity and Mass Relationship - Edexcel IAL Physics Oct 2024 Q3 | FRQ | 2 of 5 parts ((b)(i), (b)(iv)) | 8 of 16 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e8adbea5-d2fd-4e9a-8e45-adc5da2c6911&question_id=7443c7a2-52ed-4d61-82a6-4da92e3365fc&source_detail=WPH16%2F01+October+2024) | | [**WPH16/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-october-wph16-01/#q-4) | **Q4** Young Modulus of Wood - Edexcel IAL Physics Oct 2024 Q4 | FRQ | 1 of 5 parts ((b)(ii)) | 2 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e8adbea5-d2fd-4e9a-8e45-adc5da2c6911&question_id=0a706b34-55a7-4ed3-8b67-c5151986a37b&source_detail=WPH16%2F01+October+2024) | | [**WPH16/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-june-wph16-01/#q-1) | **Q1** Electrolytic Capacitor Energy Storage - Edexcel IAL Physics June 2024 Q1 | FRQ | 2 of 5 parts ((c)(i), (c)(iii)) | 4 of 11 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e77c2c99-1b5c-4ba6-aa70-228bda52f6b6&question_id=7d987fc0-8232-4273-a256-48fc692caddb&source_detail=WPH16%2F01+June+2024) | | [**WPH16/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-june-wph16-01/#q-2) | **Q2** Water Flow Through Horizontal Pipe - Edexcel IAL Physics June 2024 Q2 | FRQ | 1 of 3 parts ((a)) | 2 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e77c2c99-1b5c-4ba6-aa70-228bda52f6b6&question_id=fc9a0eb9-5662-4748-aca9-73fde1491b0c&source_detail=WPH16%2F01+June+2024) | | [**WPH16/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-june-wph16-01/#q-3) | **Q3** Rotational Oscillations of Mass on Spring - Edexcel IAL Physics June 2024 Q3 | FRQ | 1 of 5 parts ((b)(ii)) | 6 of 17 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e77c2c99-1b5c-4ba6-aa70-228bda52f6b6&question_id=92bb53a0-ae80-4ded-a1ed-05ca722f684f&source_detail=WPH16%2F01+June+2024) | | [**WPH16/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-june-wph16-01/#q-4) | **Q4** Properties and Density of Plastic Protractor - Edexcel IAL Physics June 2024 Q4 | FRQ | 1 of 5 parts ((b)(i)) | 2 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e77c2c99-1b5c-4ba6-aa70-228bda52f6b6&question_id=add499dd-ece7-4be6-8161-c05c7138c4bb&source_detail=WPH16%2F01+June+2024) | | [**WPH16/01** January 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-january-wph16-01/#q-1) | **Q1** Oscillations of a Stretched Spring - Edexcel IAL Physics Jan 2024 Q1 | FRQ | 1 of 5 parts ((b)(ii)) | 3 of 11 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=d3a61be3-ff2f-4e4d-a5b9-d789fc928f53&question_id=059c8a7c-1fa5-4122-8589-1130ee5ed624&source_detail=WPH16%2F01+January+2024) | | [**WPH16/01** January 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-january-wph16-01/#q-3) | **Q3** Magnetic Force Investigation - Edexcel IAL Physics Jan 2024 Q3 | FRQ | 1 of 5 parts ((c)(i)) | 6 of 17 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=d3a61be3-ff2f-4e4d-a5b9-d789fc928f53&question_id=c8be3080-45e6-4d42-b484-b2cbe4245af3&source_detail=WPH16%2F01+January+2024) | | [**WPH16/01** January 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-january-wph16-01/#q-4) | **Q4** Convex Lens Measurements - Edexcel IAL Physics Jan 2024 Q4 | FRQ | 1 of 6 parts ((c)(i)) | 2 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=d3a61be3-ff2f-4e4d-a5b9-d789fc928f53&question_id=489eaf55-e4ab-4f28-bae1-0762b70fb6d5&source_detail=WPH16%2F01+January+2024) | | [**WPH16/01** October 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-october-wph16-01/#q-3) | **Q3** Air Pressure and Height Above Sea Level - Edexcel IAL Physics Oct 2023 Q3 | FRQ | 3 of 5 parts ((b)(i), (b)(ii), (b)(iii)) | 11 of 16 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=80809a38-4e6e-4229-8f10-56b77771ae46&question_id=075bae83-9ffa-436e-9c2b-cc65a66c170c&source_detail=WPH16%2F01+October+2023) | | [**WPH16/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-june-wph16-01/#q-1) | **Q1** Water Flow Rate and Frequency - Edexcel IAL Physics June 2023 Q1 | FRQ | 1 of 4 parts ((b)) | 3 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=87d5df9c-b915-4b4b-abba-82e448cb13a7&question_id=d5723ede-f0de-4291-a454-756d88bb2f2d&source_detail=WPH16%2F01+June+2023) | | [**WPH16/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-june-wph16-01/#q-3) | **Q3** Bending of a Wooden Beam - Edexcel IAL Physics June 2023 Q3 | FRQ | 1 of 4 parts ((b)(i)) | 6 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=87d5df9c-b915-4b4b-abba-82e448cb13a7&question_id=af5f01ab-94f1-4067-8b9a-3a1c572d4018&source_detail=WPH16%2F01+June+2023) | | [**WPH16/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-june-wph16-01/#q-4) | **Q4** Oscillations of a Floating Test Tube - Edexcel IAL Physics June 2023 Q4 | FRQ | 1 of 6 parts ((c)(i)) | 2 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=87d5df9c-b915-4b4b-abba-82e448cb13a7&question_id=cb27334d-0466-47ca-a7f1-9c002f7237bc&source_detail=WPH16%2F01+June+2023) | | [**WPH16/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-january-wph16-01/#q-1) | **Q1** Temperature of a Bunsen Burner Flame - Edexcel IAL Physics Jan 2023 Q1 | FRQ | 1 of 4 parts ((b)(iii)) | 3 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=887f9d46-271f-4abb-9d98-52d7af235a71&question_id=d4d2374b-7072-4866-b2ab-ac9ce53c502e&source_detail=WPH16%2F01+January+2023) | | [**WPH16/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-january-wph16-01/#q-4) | **Q4** Density Determination of a Metal Ring - Edexcel IAL Physics Jan 2023 Q4 | FRQ | 1 of 7 parts ((d)(i)) | 2 of 19 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=887f9d46-271f-4abb-9d98-52d7af235a71&question_id=847e494d-fe17-4b93-8953-986f82a22077&source_detail=WPH16%2F01+January+2023) | | [**WPH16/01** October 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-october-wph16-01/#q-4) | **Q4** Properties of Constantan Wire - Edexcel IAL Physics Oct 2022 Q4 | FRQ | 1 of 6 parts ((b)(i)) | 3 of 17 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f11afb07-117c-477d-8971-30d7f7fa7a9e&question_id=cf52c292-83ce-4158-8d86-4161c02ee202&source_detail=WPH16%2F01+October+2022) | | [**WPH16/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-june-wph16-01/#q-3) | **Q3** Spectral Lines and Atomic Number - Edexcel IAL Physics Jun 2022 Q3 | FRQ | 1 of 5 parts ((b)(i)) | 6 of 16 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=05e3bec6-50fe-4400-940a-ccf0deea7ce0&question_id=9dbcffe4-e4f0-4c1f-aaf6-13b30da7b61d&source_detail=WPH16%2F01+June+2022) | | [**WPH16/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-june-wph16-01/#q-4) | **Q4** Metal Nut Density and Uncertainty - Edexcel IAL Physics Jun 2022 Q4 | FRQ | 1 of 6 parts ((c)(i)) | 2 of 18 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=05e3bec6-50fe-4400-940a-ccf0deea7ce0&question_id=a40ad4dd-f3cc-4ca3-9ee1-67bb6a84174d&source_detail=WPH16%2F01+June+2022) | | [**WPH16/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-01/#q-3) | **Q3** Radioactive Decay of Two Isotopes | FRQ | 1 of 6 parts ((d)(i)) | 5 of 16 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba54522a-15a7-44b3-bc8a-fcc2dbc25cd2&question_id=4f33de65-9175-4ea4-bdec-15662d3725ed&source_detail=WPH16%2F01+January+2022) | | [**WPH16/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-01/#q-4) | **Q4** Rolling Cylinder down a Ramp | FRQ | 1 of 8 parts ((d)(i)) | 2 of 18 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba54522a-15a7-44b3-bc8a-fcc2dbc25cd2&question_id=b9057358-f6ec-4e88-9ba3-bc1477d7022f&source_detail=WPH16%2F01+January+2022) | | [**WPH16/02** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-02/#q-1) | **Q1** Capacitance Determination by Charge Sharing - Edexcel IAL Physics Jan 2022 Q1 | FRQ | 1 of 6 parts ((c)(i)) | 2 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a68245f3-b013-497e-85d4-b2834c41a6f6&question_id=228b91ac-0e39-438b-ad07-0e2967661d1f&source_detail=WPH16%2F02+January+2022) | | [**WPH16/02** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-02/#q-3) | **Q3** Temperature Dependence of Diode Current - Edexcel IAL Physics Jan 2022 Q3 | FRQ | 1 of 5 parts ((c)(i)) | 6 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a68245f3-b013-497e-85d4-b2834c41a6f6&question_id=64dcc374-ce94-499a-9a2c-dc53e1bb5c11&source_detail=WPH16%2F02+January+2022) | | [**WPH16/02** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-02/#q-4) | **Q4** Stiffness of a Metal Rod - Edexcel IAL Physics Jan 2022 Q4 | FRQ | 1 of 7 parts ((c)(i)) | 2 of 18 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a68245f3-b013-497e-85d4-b2834c41a6f6&question_id=3c6e3ad3-d3ea-425f-b1be-9ec87472a82c&source_detail=WPH16%2F02+January+2022) | | [**WPH16/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-october-wph16-01/#q-2) | **Q2** Pendulum Motion and Period - Edexcel IAL Physics Oct 2021 Q2 | FRQ | 1 of 3 parts ((a)) | 3 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=156c424c-fce8-42cf-844c-78581f16cec1&question_id=020d44fc-fe62-40cf-b4ff-c9efcd999b59&source_detail=WPH16%2F01+October+2021) | | [**WPH16/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-october-wph16-01/#q-3) | **Q3** Standing Waves in a Bottle - Edexcel IAL Physics Oct 2021 Q3 | FRQ | 1 of 3 parts ((b)(i)) | 6 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=156c424c-fce8-42cf-844c-78581f16cec1&question_id=06f6b7fe-98da-446e-93ed-725b6631cc9d&source_detail=WPH16%2F01+October+2021) | | [**WPH16/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-october-wph16-01/#q-4) | **Q4** Shear Modulus of Steel Rod - Edexcel IAL Physics Oct 2021 Q4 | FRQ | 1 of 7 parts ((c)) | 2 of 16 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=156c424c-fce8-42cf-844c-78581f16cec1&question_id=b5c30f13-36ce-4a6e-84c4-00047d30d9ca&source_detail=WPH16%2F01+October+2021) | | [**WPH16/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-june-wph16-01/#q-1) | **Q1** Oscilloscope Measurement of a Rotating Wheel - Edexcel IAL Physics Unit 6 June 2021 Q1 | FRQ | 1 of 2 parts ((b)) | 4 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=41bf71ba-c485-4200-8564-e6902ece9c3e&question_id=058cfed2-1f6f-4ef0-8610-9177217e8f88&source_detail=WPH16%2F01+June+2021) | | [**WPH16/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-june-wph16-01/#q-3) | **Q3** Horizontal Oscillations of a Trolley - Edexcel IAL Physics Unit 6 June 2021 Q3 | FRQ | 1 of 5 parts ((b)(i)) | 6 of 18 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=41bf71ba-c485-4200-8564-e6902ece9c3e&question_id=c7340276-5fe2-46fb-a20b-619b8c4c6e65&source_detail=WPH16%2F01+June+2021) | | [**WPH16/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-june-wph16-01/#q-4) | **Q4** Lens Measurement and Refractive Index Determination - Edexcel IAL Physics Unit 6 June 2021 Q4 | FRQ | 1 of 7 parts ((c)(i)) | 2 of 16 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=41bf71ba-c485-4200-8564-e6902ece9c3e&question_id=51c2f6f4-94b9-4a7d-96c0-e1ffa8dc8288&source_detail=WPH16%2F01+June+2021) | | [**WPH16/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-january-wph16-01/#q-3) | **Q3** Nuclear Radius and Nucleon Number - January 2021 Q3 | FRQ | 1 of 4 parts ((b)(i)) | 6 of 13 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f2fffd63-93e1-4e9c-8323-1fe7014b5f18&question_id=b97fcc7d-8033-41af-8863-f69665c4b3c4&source_detail=WPH16%2F01+January+2021) | | [**WPH16/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2020-october-wph16-01/#q-3) | **Q3** Magnetic Oscillations - Edexcel IAL Physics Oct 2020 Q3 | FRQ | 1 of 6 parts ((c)(i)) | 6 of 19 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ec519af9-09f9-4899-90e6-2c1c11d16f59&question_id=3e58814d-5ede-4216-add5-f4aa048bdcfa&source_detail=WPH16%2F01+October+2020) | | [**WPH16/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2020-october-wph16-01/#q-4) | **Q4** Density of Slotted Mass - Edexcel IAL Physics Oct 2020 Q4 | FRQ | 3 of 8 parts ((a)(iii), (b)(i), (c)(i)) | 7 of 18 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ec519af9-09f9-4899-90e6-2c1c11d16f59&question_id=3fd08b21-0401-4a0c-be10-bbd5a28322a1&source_detail=WPH16%2F01+October+2020) | ## Related topic questions in Analysis - [• comment on the trend/pattern obtained](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/comment-on-the-trend-pattern-obtained/) — 15 question items · 11 papers — 42 marks · 2020–2026 - [• compound percentage uncertainties correctly](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/compound-percentage-uncertainties-correctly/) — 33 question items · 20 papers — 105 marks · 2020–2026 - [• determine the percentage uncertainty in measurements for a single reading using half the resolution of the instrument and from multiple readings using the half range.](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/determine-the-percentage-uncertainty-in-measurements-for-a-single-reading-using-half/) — 41 question items · 20 papers — 105 marks · 2020–2026 - [• determine the relationship between two variables or determine a constant with the aid of the graph, e.g. by determining the gradient using a large triangle](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/determine-the-relationship-between-two-variables-or-determine-a-constant-with-the-aid/) — 74 question items · 20 papers — 247 marks · 2020–2026 - [• discuss uncertainties qualitatively and quantitatively](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/discuss-uncertainties-qualitatively-and-quantitatively/) — 60 question items · 20 papers — 152 marks · 2020–2026 - [• perform calculations, using the correct number of significant figures](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/perform-calculations-using-the-correct-number-of-significant-figures/) — 128 question items · 20 papers — 411 marks · 2020–2026 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 43 question stems cover this subtopic across 20 papers, but only 51 tagged parts and 180 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 2020–2026. 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/edexcel-ial/physics/physics-unit-6-wph16/analysis/use-the-correct-units-throughout/