Aray of light strikes a flat mirror at an angle as shown in the illustration. note that, in this side‑view illustration, the mirror is laying flat on the ground. the arrow represents the direction that the incoming (or incident) ray of light is traveling and the angle at which it strikes the mirror. a light ray comes in from the left and strikes the mirror at a 30 degree angle. which of the illustrations represents the direction the ray of light is traveling after it reflects off the mirror? note that, in each picture, the arrow represents a possible direction the ray of light could travel and the possible angle at which it leaves the mirror. a light ray departs the mirror's surface at a 30 degree angle, moving right. a light ray departs the mirror's surface at a 30 degree angle, moving left. a light ray departs the mirror's surface at a 90 degree angle, moving straight up. a light ray departs the mirror's surface at a 60 degree angle, moving right.