The properties and behaviour of light have fascinated people throughout the ages. Though much has been learned about the way in which light behaves, its fundamental nature remains a mystery. This unit is perhaps the most important one in Physics 20. It begins with a consideration of some important characteristics of light. Applications should be referred to regularly in the unit.
Geometric optics form the main components of the unit.
Many opportunities should be provided for students to investigate the properties and behaviour of light. Core Unit I dealing with the physics of everyday things can help to put the study of light within a relevant context for further investigation. Teachers should feel free to experiment in modifying the sequence of presentation of material, as well as attempting alternative instructional approaches and student assessment techniques. Perform activities to investigate the behaviour of light. Apply the physical laws which govern the behaviour of light in solving problems.