The angle of incidence on a plane mirror is given by

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics

Problem

i = 2\theta - 15^\circ

. If the reflected ray makes an angle of

45^\circ

with the normal, determine the value of

\theta

. (a)

37.5^{\circ}

(b)

18.75^{\circ}

(c)

30^{\circ}

(d)

22.5^{\circ}