Ray Optics and Optical Instruments - Result Question 10

10. A ray of light travelling in a transparent medium of refractive index μ, falls on a surface separating the medium from air at an angle of incidence of 45. For which of the following value of μ the ray can undergo total internal reflection?

(a) μ=1.33

(b) μ=1.40

(c) μ=1.50

(d) μ=1.25

[2010]

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Answer:

Correct Answer: 10. (c)

Solution:

  1. (c) For total internal reflection,

μ1sinC21.414μ=1.50



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