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(i) What is the relation between critical angle and refractive index of a material ?(ii) Does critical angle depend on the colour of light ? Explain |
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Answer» (i) Refractive index (μ) = 1/sin C where C is the critical angle. (ii) Since, refractive index depends upon the wavelength of light, the critical angle for a given pair of media is different for different wavelengths (colours) of light. |
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