What causes a lens to change the direction of light rays?
Refraction as light passes between materials.
Dispersion as light passes between materials.
Reflection as light passes between materials.
Diffraction as light passes between materials.
Flashcards for Edexcel A Level Physics Lenses and optical images, covering the key terms, definitions and equations you need to recall for Paper 1, Paper 2 and Paper 3. 32 cards, matched to the Edexcel A Level Physics (9PH0) specification.