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fos same angle of incidence, that orgle of sei sactionfors three different media A,Band c ase 25 30and asxesfectiveb.-Inkhchmedia-will thewelocitgoof light he ninimum |
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Answer» We know that velocity of light in amedium is inversely proportional to the refractive index of the medium from the equation n = c / v .............(1) Moreover the refractive index of the medium is inversely proportional to the angle of refraction for the same angle of incidence from the equation n = sin i / sin r ..............(2) From (1) and (2) ,it is clear that velociy of light in a medium is directly proportional to the angle of refraction in that medium at a particular angle of incidence. Thus the velocity of light is minimum inmedium A where the angle of refraction is minimum. |
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