CONCEPT MAP

The unit's structure branches into Ray Optics -- reflection and refraction feeding into the spherical mirror (mirror equation, magnification), refraction at a spherical surface feeding into the lens maker's formula and lens equation/magnification/power and its combinations, and total internal reflection and its applications on one side, with prism dispersion and its formula on the other -- and Wave Optics -- Huygens' principle verifying the laws of reflection and refraction, interference via the principle of superposition culminating in Young's double slit experiment, diffraction via single-slit diffraction and the difference between interference and diffraction, and polarisation via polarisation by reflection (Brewster's law), by refraction/crossed polaroids (Malus' law), and by scattering. …