The angle between the reflected ray and the perpendicular is called the angle of reflection. Light is reflected at the same angle that it strikes the mirror. The angle of reflection is always exactly equal to the angle of incidence. This is called the Law of Reflection . In this activity, students will explore the law of reflection by trying to guess where two people must stand so each can see the other s reflection in a mirror.
Students mount the mirror flat on a wall with masking tape.
The mirror should be at eye level covered with a piece of paper. Making sure to use the mirror as a centerline, have students lay a 2-3 meter length of masking tape on the floor extending out from, and perpendicular to, the wall. Students will work in pairs using the Student Page as a guide. Students will be challenged to predict where two people must stand so each can see the other s reflection in the mirror. Each pair will discuss and agree on the places where they think they must stand.