GCSE Reflection, Refraction and lenses

A fully-editable PowerPoint that covers GCSE level content on reflection and refraction, suitable for AQA, EdExcel, OCR and other courses. This PowerPoint includes:

• a description of the term “wavefront”
• Types of reflection - specular, diffuse etc
• Angles of incidence and reflection
• The “law of reflection”
• An introduction to refraction, including examples
• A description of what happens in refraction, in terms of speed and density
• How to determine refractive index using Snell’s Law
• Example questions on refractive index
• Determining the refractive index using a graph
• Practically finding the critical angle
• Calculating critical angles using Snell’s Law
• Total internal reflection and its uses
• Definitions of converging and diverging lenses
• Ray diagrams for lenses
• Magnification