A student is given a rectangular glass block, a ray box with a single narrow slit, a protractor, a ruler, a pencil and a sheet of white paper.
Describe how the student could investigate how the angle of refraction depends on the angle of incidence when light enters the glass block.
In your answer, describe the results you would expect and explain them using ideas about the speed of light.
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.