A student uses a ray box and a plane mirror to investigate reflection.
How should the student measure the angle of incidence and the angle of reflection?
Between each ray and the mirror surface, using a protractor
Between the two rays, then halve the angle using a ruler
Between each ray and the normal, using a protractor
Between each ray and the ray box, using a set square
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.