S5 Physics Paper Two Optics Notes: Curved Mirrors and Refraction (Continuation)

These Senior Five physics notes continue the optics topic for Paper Two. They work through problems on concave and convex mirrors step by step, including image position, magnification and systems of two mirrors. The notes compare spherical and parabolic reflectors and explain caustic surfaces. They also describe several experiments for finding the focal length of concave and convex mirrors, such as the no-parallax and graphical methods. The refraction section explains why light bends, gives Snell's laws, and covers relative and absolute refractive index, the principle of reversibility and refraction through parallel boundaries. Short worked examples follow each idea.