An incident ray can be defined as
∙ A. a light ray reflected from a flat surface
∙ B. a light directed toward a surface
∙ C. a diffused light ray
∙ D. a light ray that happens periodically
∙ A. a light ray reflected from a flat surface
∙ B. a light directed toward a surface
∙ C. a diffused light ray
∙ D. a light ray that happens periodically