The angle of reflection is the angle between the reflected ray and the normal line drawn to the surface of the mirror at the point of incidence.
In other words, it's the angle between the incoming ray (the ray of light that strikes the mirror) and the reflected ray (the ray of light that bounces off the mirror). This angle is measured with respect to the normal, which is a line perpendicular to the surface of the mirror at the point of incidence.
According to the law of reflection, the angle of reflection is equal to the angle of incidence. The angle of incidence is the angle between the incoming ray and the normal line. This law holds true for both plane mirrors (flat mirrors) and curved mirrors.
Mathematically, the law of reflection can be stated as:
Angle of Incidence = Angle of Reflection
This law is a fundamental principle in understanding how light interacts with mirrors and is crucial in describing the formation of images in mirrors.