Physics

Problem

A ray of light falls on a plane mirror making an angle

\theta

with the surface of the mirror. a. (i) Express the angle of incidence in terms of

\theta

. b. (ii) Derive a general expression, in terms of

\theta

, for the angle between the incident and reflected rays. c. (iii) Using your expression, evaluate the angle between the two rays when

\theta = 15^{\circ}