How we can find angle of …
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Meghna Thapar 5 years, 6 months ago
In geometric optics, the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal. This line is known as a normal line (labeled N in the diagram). The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. If the light makes an angle of 10o with the surface, it makes an angle of 80o with the normal to the surface. Thus the angle of incidence is 80o. According to the law of reflection, the angle of reflection equals the angle of incidence. So the angle of reflection (measured to the normal) is 80o.
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