Stefan is writing a report about the law of reflection. In his report, he says that the angle of incidence is the angle between the surface of the mirror and the incoming ray. Do you agree with him? Why or why not?

Answer:

I disagree with Stefan. According to the law of reflection, the angle of incidence is defined as the angle between the incoming (incident) ray and the normal line, not the surface of the mirror. The normal is an imaginary line that is drawn perpendicular to the mirror's surface at the point of reflection.