Question

what does the law of reflection say?
the law of reflection states that light changes color when it reflects off a surface.
the law of reflection says the angle of incidence equals the angle of reflection.
the law of reflection says that light travels faster in denser mediums.

Explanation:

The law of reflection is a fundamental principle in optics. It specifically pertains to the relationship between the angle at which light approaches a surface (angle of incidence) and the angle at which it bounces off (angle of reflection). The first option about light changing color is incorrect as color change isn't part of the law of reflection. The third option about light speed in denser mediums is related to refraction (a different optical phenomenon), not reflection. The second option correctly states the core of the law of reflection - that the angle of incidence equals the angle of reflection.

Answer:

The law of reflection says the angle of incidence equals the angle of reflection.