IMPORTANT A Level Physics Topic @zhelyo

Uploaded May 2025 | Updated September 2026, 3 weeks ago

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Here is a question from A Level Physics on a very common mistake - circular motion.

This is a question from Edexcel A Level Physics Paper 1 but applicable to all exam boards including AQA, OCR A and B, Edexcel, IB and similar courses such as AP Physics.

We will look at the motion of a conical pendulum.

This a question from the 2022 Paper 1 from Edexcel but completely applicable to all exam boards

The paper can be found here: qualifications.pearson.com/content/dam/pdf/A-Level/Physics/2015/Exam-materials/9ph0-01-que-20220527.pdf

Please note that I am not affiliated with the exam board and my solution may not be accurate and the views expressed are my own.

$All of Edexcel Waves in 67 Minutes My Physics Tutoring: https://zphysicslessons.net/physics-tutoring Extra Help: https://www.youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Join my Free Mailing List: https://zphysicslessons.net/about In todays video we cover the whole of Edexcel and iEdexcel A Level Physics Waves. We cover everything from superposition to optics and rays for the Edexcel and international Edexcel syllabus/specificaiton. Please note that these solutions are not official and there may be mistakes. Please check the official Edexcel website for official mark scheme solutions: https://qualifications.pearson.com/en/qualifications/edexcel-a-levels/physics-2015.html The amazing standing wave animation shown: https://www.walter-fendt.de/html5/phen/standingwavereflection_en.htm Chapters: 00:00 Wave Definitions 01:58 The Wave Equation 02:46 Transverse and Longitudinal Waves 03:55 Longitudinal Waves Displacement Distance Graphs 07:26 Transverse Waves Graphs 08:10 Core practical speed of sound 11:13 Wavefront coherence path and phase difference 12:48 Phase Difference deep dive 15:50 Superposition 16:45 Interference and conditions 18:34 Superposition problems 20:46 Stationary Waves visualisation 22:08 Standing Wave on a string 23:26 Standing Wave problem 24:55 The speed of a wave on a string 27:05 Harmonics 28:20 Intensity 29:49 Refractive Index 31:37 Snells Law 34:07 Total Internal Reflection and Critical Angle 37:08 Critical Angle Problem 40:51 Focal Length of Converging and Diverging Lenses Edexcel Only 42:54 Ray Diagram Convering Lens Edexcel Only 44:04 Real and Virtual Image Edexcel Only 46:05 Diverging Lens Diagram Edexcel Only 46:44 Power of a Lens 48:35 Power of a Lens submerged in water 49:40 The Lens Equation 50:56 Lens Practice question 54:21 Polarisation 58:47 Diffraction Huygens Principle 01:01:37 Huygens Principle Sample Problem 01:02:56 Diffraction Gratings$

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