A ray of light travels from glass into air. The ray meets the boundary at an angle to the normal.
Which statement describes the ray in the air?
It bends towards the normal, so the angle in air is smaller
It does not bend, so the angle in air is the same as in glass
It bends away from the normal, so the angle in air is larger
It bends away from the normal, so the angle in air is smaller
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.