state snell's law of reflection
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The snell's law states that the ratio of sine of angle of incidence to the sine of angle of refraction is always constant for two reasons. →μ(constant) = refractive index = sinisinr.
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The Snell's law is :
- The refracted ray,incident ray and normal at the point of incidence lies on the same plane.
- The ratio of sine of angle of incidence to the sine of angle of refraction is constant for a pair of given media.(Refractive index = sin i / sin r.
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