An opaque blue object is illuminated with white light. Which statement explains why the object appears blue?
it absorbs blue light and reflects other colours
it transmits blue light and absorbs other colours
it reflects blue light and absorbs other colours
it reflects all colours and transmits blue light
93 exam-style questions on Edexcel GCSE Physics 5.1 Reflection, refraction and lenses, covering 5.1.1 Reflection, refraction and total internal reflection, 5.1.2 Specular and diffuse reflection, 5.1.3 Colour of light: absorption and filters, 5.1.4 Lenses: power, focal length and shape, 5.1.5 Ray diagrams for converging and diverging lenses, and 5.1.6 Real and virtual images. Each one has a worked solution and a mark scheme showing where the marks go.