White light passes through a red filter and then through a green filter.
What is seen on the far side of the green filter?
Red light, because the green filter only absorbs green light
Green light, because the second filter decides the colour
Yellow light, because the red and green light combine
No light, because the green filter absorbs the red 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.