A student uses a lens as a magnifying glass.
Which type of lens is the student using?
A concave lens, which is thinner in the middle than at the edges
A convex lens, which is thinner in the middle than at the edges
A concave lens, which is thicker in the middle than at the edges
A convex lens, which is thicker in the middle than at the edges
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.