PHYSICS · Single correct · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics
Problem
A light ray strikes a plane mirror. The mirror is rotated by 7∘ while the direction of the incident ray is kept unchanged. Which of the following correctly states how the angles of incidence and reflection are affected?
(a) Each angle increases by 14∘
(b) Each angle increases by 3.5∘
(c) Each angle increases by 7∘
(d) Angle of incidence increases by 7∘ but angle of reflection remains the same