The plane in which the incident ray, the reflected ray and the normal lie at the point of incidence ____ to the reflecting surface.

The correct answer is: Is perpendicular

• The normal will be always perpendicular to the surface.
• The incident ray, the normal, and the reflecting ray will lie in the same plane.
• The plane in which the incident ray, the reflected ray, and the normal lie at the point of incidence perpendicular to the reflecting surface.