Explain, in terms of a wave property, what is meant by the term monochromatic light.
State the speed of light in air.
A ray of monochromatic blue light is directed through a glass prism.
The wavelength of the blue light in air is 4.6 × 10-7 m. Calculate the frequency of this blue light.
The refractive index of the glass prism for this blue light is 1.58. Calculate the speed of this blue light inside the prism.
216 exam-style questions on CIE IGCSE Physics 3.2 Light, covering 3.2.1a Reflection of light, 3.2.1b Images in a plane mirror, 3.2.2 Refraction of light, 3.2.2a Refraction of light, 3.2.2b Total internal reflection, 3.2.2c Refractive index and critical angle, 3.2.2d Optical fibres, 3.2.3a Converging and diverging lenses, 3.2.3b Ray diagrams and the nature of images, 3.2.3c Virtual images and the magnifying glass, 3.2.3d Correcting long-sightedness and short-sightedness, and 3.2.4 Dispersion of light. Each one has a worked solution and a mark scheme showing where the marks go.