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If the refrac...

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If the refractive index of a medium for red and violet light are r & v respectively prove that r < v.

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Q. A Ray of light is incident in medium one on a surface that separates medium one from medium to let V1 and V2 represent the velocity of light in medium one and medium to respective also let n12 and n21 respect the refractive index of medium one with respect to medium 2 and refractive index of medium two with respect to medium 1 respectively. if i and r denote the angles of incidence and refraction then
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d)sin i/sin r=n21=vi/v2

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