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Last updated

28 May 2026

pptx, 2.2 MB
pptx, 2.2 MB

A complete, fully-resourced lesson on the refraction of light, aligned to the Cambridge IGCSE (9-1) Physics (0972/0625) syllabus — section 3.2.2.
This resource, last updated June 2026, covers all nine learning objectives for this section: defining angle of incidence and angle of refraction; a full step-by-step practical investigation using a glass block (equipment, ray tracing method, and results); Snell’s Law (n = sin i / sin r) with worked examples; the definition of refractive index as a ratio of wave speeds; critical angle; the two conditions for total internal reflection; and real-world applications of total internal reflection including optical fibres in telecommunications and endoscopes in medicine. An interactive simulation (PhET Bending Light) is embedded for students to investigate TIR independently.
Includes retrieval questions, guided investigation tasks, and exam-style Q&A slides — suitable for Years 9–11. Follows on from reflection of light and connects directly into dispersion and thin lenses.
Part of the complete Cambridge IGCSE Physics (0972/0625) Waves series — all individual lessons are available separately or as a bundle in the shop.

Explore the full series in the shop for all other units: /teaching-resource/igcse-physics-waves-unit-bundle-7-full-lessons-0972-0625-13480926

Get this resource as part of a bundle and save up to 16%

A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

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IGCSE Physics Waves Unit Bundle — 7 Full Lessons [0972/0625]

A complete, classroom-ready bundle covering every topic in the Waves unit for Cambridge IGCSE (9-1) Physics (0972/0625). This bundle includes all seven full lessons, each featuring an editable PowerPoint with full explanation slides, guided practice, retrieval tasks, Q&A, and model answers — fully aligned to the 0972/0625 specification. Included lessons: 3.1 General Properties of Waves — wave terminology, transverse vs longitudinal waves, wave equation (v = fλ), reflection, refraction, diffraction, ripple tank demonstrations 3.2.1 Reflection of Light — law of reflection, plane mirror images, ray diagram construction, virtual image characteristics 3.2.2 Refraction of Light — Snell's Law, refractive index, critical angle, total internal reflection, optical fibres and endoscopes 3.2.3 Thin Lenses — converging and diverging lenses, ray diagrams, image characteristics table, magnifying glass, long and short-sightedness correction 3.2.4 Dispersion of Light — dispersion through a prism, visible spectrum in order of frequency and wavelength, monochromatic light 3.3 Electromagnetic Spectrum — all seven regions, applications and hazards, satellite communication, digital vs analogue signals 3.4 Sound — longitudinal waves, compressions and rarefactions, speed of sound, audible range, ultrasound applications, echo calculations Every lesson includes editable PPT slides fully aligned to the 0972/0625 spec, learning objectives matched to specification points, diagrams and conceptual visuals, retrieval and check-progress questions with model answers, exam-style practice written in Cambridge format, embedded simulations and video links, and EAL-friendly scaffolds for mixed-ability classes. Last updated June 2026. Part of the complete Cambridge IGCSE Physics (0972/0625) course — explore other unit bundles in the shop.

£20.99

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