Two Flat Rectangular Mirrors Are Set Edge to Edge and Placed

question 31

Multiple Choice

Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. The edges of the two mirrors meet at a 30° angle. A light ray that enters parallel to mirror 2 reflects from mirror 1 and then from mirror 2. The angle of reflection of that ray from mirror 2 is

• A) 0°.
• B) 30°.
• C) 60°.
• D) 90°.
• E) 120°.

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