State the laws of refraction of light. write the mathematical from of 2nd law.
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The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane. ... This law is also known as Snell's law of refraction. N = sin i/ sin r. This constant is also called the refractive index of the second medium with respect to the first.
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