At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror. The ray of light that leaves the mirror is known as the reflected ray (labeled R in the diagram). In the diagram, the ray of light approaching the mirror is known as the incident ray (labeled I in the diagram). The reflected ray, the incident ray and the normal at the point of incidence lie on the same plane. The diagram below illustrates the law of reflection. The angle of incidence is equal to the angle of reflection. If Minister emerged from the opposite side, which is not between voluntarily reflected. If a ray of light could be observed approaching and reflecting off of a flat mirror, then the behavior of the light as it reflects would follow a predictable law known as the law of reflection. If the angle I 72 degrees, What is the minimum incident Angle the ray. Light is known to behave in a very predictable manner. With the pencil mark two Xs to indicate the direction of the emergent ray. If light has to travel from one point to another, it will take that path by which it will reach to another point in the smallest possible time. This is the incident ray for the angle of incidence, i 10 0. Light always travel the smallest time path. ![]() If you draw that line of reflection up through the point of reflection, you will see that angle that line makes with the line of tangency above that point is the same as below ('vertical angles' from geometry) and so is the same as the angle of incidence.
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