Suppose you have a plane mirror that reflects light. When light strikes the mirror, the light is reflected off the surface. The law of reflection says that:
Statement 1: The angle of incidence (incoming ray) is equal to the angle of reflection (outgoing ray).
Statement 2: The angle is measured from a perpendicular line to the surface called as Normal.
Statement 3: Incident ray, reflected ray and the normal does not lie in the same plane.
Statement 4: The law works for the plane as well as for curved surfaces.
S1, S2 are correct and S3, S4 are wrong.
The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection r is equal to the angle of incidence i. Both angles are measured with respect to the normal to the mirror. The law of reflection governs the reflection of light rays off smooth conducting surfaces, such as polished metal or metal-coated glass mirrors.