plane mirror angle of incidence angle of reflection

For rough surfaces, the law of reflection remains valid. The law of reflection also holds for non-plane mirrors, provided that the normal at any point on the mirror is understood to be the outward pointing normal to the local tangent plane of the mirror at that point. The Laws of Reflection still apply but because the normals of the surface are all on different angles, light is scattered or diffused. Diffuse reflection occurs when light strikes a rough surface, as shown here. So, if incident rays are parallel, reflected rays are also parallel. Specular reflection is where light is reflected off a smooth surface.

According to the law of reflection, the angle of incidence equals the angle of reflection. The angle of incidence is the angle between this normal line and the incident ray the angle of reflection is the angle between this normal line and the reflected ray. The convention used to express the direction of a light ray is to indicate the angle which the light ray makes with a normal line drawn to the surface of the mirror. Reflection involves a change in direction of the light ray. The Law of Reflection is when a ray of light strikes a plane mirror, the light ray reflects off the mirror.

Plane mirror angle of incidence angle of reflection