Define law of reflection
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The law of reflection states that when a light ray hits a smooth surface, such as a mirror, the angle of incidence (the angle between the incident ray and the normal line) is equal to the angle of reflection (the angle between the reflected ray and the normal line). This means that the light ray bounces off the surface at the same angle it approached it. The law of reflection helps explain how we see ourselves in mirrors and how light behaves when it interacts with reflective surfaces.