For which colour of white light the refractive index of a transparent medium is: (i) the least,
For which colour of white light the refractive index of a transparent medium is: (i) the least, (ii) the most? Give reason to your answer
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(i) The refractive index of a transparent medium is least for red light.
(ii) The refractive index of a transparent medium is most for violet light. The reason is that the speed of violet light is least in a transparent medium while the speed of red light is most in transparent medium.
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