# Refraction and reflection

by figs
Tags: reflection, refraction
 P: 699 it depends on what you mean by the angle of deflection. Do you mean the angle of incidense + the angle of reflection. If this is the case, rotationg the mirror by an angle $$\theta$$ would increase both the angle of incidence and the angle of reflection by $$\theta$$, resulting in an angle difference of $$2\theta$$. If you want to prove this just draw a diagram. Then tilt your diagram by a certain angle. See what happens. Regards, Nenad