Wednesday 28th April 2021
Wednesday 7th July 2021

Code: 8512


This NEW online student session is aimed at consolidating knowledge in preparation for successful assessment in summer 2021.

The webinar will focus on the key challenges of the interference of waves and refraction of light and address qualitative and problem-solving questions that are likely to be asked on these topics. The online course is interactive, with Q & A discussion time and opportunities for students to ask questions built in. There will also be one or two tasks.

Students will also receive valuable course notes written and produced by the session leader, a current examiner in A level Physics.


  • Give opportunity for students to hear key points and key messages direct from a current examiner
  • Take away a deepened knowledge and skills base of advice and guidance to access the higher grades in examinations
  • Enhance your understanding of what examiners are looking for when answering questions on interference of waves and refraction of light
  • Take away a full set of conference notes, with examination tips and example answers


4.00 – 4.05pm
Welcome and Introduction

4.05 – 4.25pm
Key Essentials & Exam Questions: Diffraction Patterns

  • Use of diffraction simulation software to deepen understanding of interference
  • How to explain the process of superposition verbally
  • Explaining and applying the double slit and diffraction formulae
  • Questions, question types on diffraction patterns, model answers

4.25 – 4.45pm
Key Essentials & Exam Questions: Standing Waves

  • Using a Phet simulation demonstration to explain how standing waves are produced
  • How to compute the harmonics for waves on strings and in pipes
  • Learning how to use an oscilloscope to analyse wave properties
  • Tackling questions on different types of standing wave including practical-based questions
  • Grade A/A* responses and pitfalls to avoid

4.45 – 5.00pm
Tackling Questions on the Refraction of light

  • Understanding the concept of refractive index and Snell’s Law
  • Using simulation software to demonstrate of the concepts of critical angle and TIR
  • Solving complex problems with two or more media
  • Looking at more complex questions relating to application of refraction (particularly fibre optics)
  • Grade A Grade A/A* responses on describe/explain questions
  • Tackling the key challenge areas


Tony Dunn is a current examiner for OCR A-level Physics and has taught for over 30 years in secondary schools and sixth form colleges, mainly in inner city areas, specialising in A-level Physics. Since the new A-level curriculum was introduced, he has had 100% pass rates with all his A-level Physics groups, whilst working at an inclusive college in a deprived borough. He was a Head of Science for 12 years and also spent several years training Physics teachers in SE Asia.