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InterviewSolution
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Refractive index of an optical medium changes with 1. the nature of the medium. 2. the change in the angle of incidence of the ray. 3. colour of the incident ray. Select the correct answer using the code given below: (a) 1 and 3 only (b) 2 and 3 only (c) 1 and 2 only (d) 1, 2 and 3 |
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Answer» The correct option is: (d) 1, 2 and 3 Explanation: Refractive index of a medium depends on its nature. Refractive index (µ) is also given by μ = sin i / sin r where i = angle of incidence r = angle of refraction Thus, µ depends on the angle of incidence. Again, 0 = C0 / C where C0 is the velocity of light in vacuum and c is the velocity in a medium. We know that frequency remains constant when light passes from one medium to others, therefore, µ = λ0 / λ The colour of light depends on wavelength. Thus, µ depends on the colour of the incident ray |
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