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Question - 6 a) i) For which colour of white light the refractive index of a transparent medium is theleast and the most? Give reason to your answer.ii) With the help of a well- labelled diagram show that the apparent depth of anobject such as coin, in water is less than its real depth.b) How does the angle of deviation produced by a prism depends on the angle ofincidence of light at the prism surface draw a graph to illustrate your answer. c) Name the three factors which affect the refractive index of a medium and how theyaffect. |
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Answer» a)(i) According to Snell's law nv is constant for all the constituents of a single wave passing through a particular medium, here the seven wavelengths of white light. Since VELOCITY V of RED light through a medium is maximum, refractive index n for red light will be least.b) First the angle of deviation produced by prism decreases with the increasing angle of incidence but on further increasing the angle of incidence the angle of deviation increases. Figure given in side SHOWS the graph for variation of angle of deviation with the angle of incidence.c) AnswerNature of the material of the medium.Density of the medium.Colour of the light.Wavelength of the light.Hope it helps!!Please mark me as BRAINLIEST |
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