A ray of light hitting a mirror will be reflected at an equal but opposite angle to the angle at which it hits the surface. Drawing a ray diagram can show how a ray of light will be reflected by a mirror. The angle of incidence is always equal to the angle of reflection.

1. Must know that a ray of light is reflected by a mirror Should know how to draw this on a ray diagram Could know how to predict where a ray of light will be reflected

2. New ideas Mirror Normal line i r incident ray reflected ray i = angle of incidence r = angle of reflection

3. Angle i always = angle r