A convex lens can form an image of a distant lamp on a screen. A concave lens cannot form an image on a screen.
Explain why, in terms of what each lens does to rays of light.
State one similarity between the ways in which the two types of lens affect light.
A person wears glasses with concave lenses.
Suggest which problem with their sight the glasses correct. Explain your answer.
51 exam-style questions on OCR GCSE Physics 5.3 Wave interactions, covering 5.3.1 Wavelength and how substances affect waves, 5.3.2 Wave velocity in different substances, 5.3.3 Convex and concave lenses, 5.3.4 Ray diagrams for reflection and refraction, and 5.3.5 Colour, absorption and reflection. Each one has a worked solution and a mark scheme showing where the marks go.