Students should be able to:
- recall and use the terms normal, angle of incidence and angle of reflection to describe the reflection of light
- state that, for reflection, the angle of incidence is equal to the angle of reflection and use this principle in constructions, measurements and calculations
- recall and use the terms normal, angle of incidence and angle of refraction to describe the refraction of light
- recall and apply the relationship sin i / sin r = constant to new situations or to solve related problems
- define refractive index of a medium in terms of the ratio of speed of light in vacuum and in the medium
- explain the terms critical angle and total internal reflection
- apply total internal reflection to the use of optical fibres in telecommunication and medicine, stating the advantages of such use
- describe the action of a thin converging lens on a beam of light
- define the focal length for a converging lens
- draw ray diagrams to illustrate the formation of real and virtual images of an object by a thin converging lens
- describe the characteristics of images (e.g. real/virtual, magnified/diminished, and upright/inverted) formed by a thin converging lens.