When a plane mirror is rotated through about an axis in its plane

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

Problem

When a plane mirror is rotated through

6^{\circ}

about an axis in its plane, keeping the incident light beam fixed, through what angle does the reflected beam turn? (a)

6^{\circ}

(b)

12^{\circ}

(c)

3^{\circ}

(d)

18^{\circ}