A beam of light is traveling from Region I to Region IV (refer figure) – InterviewSolution

1.	A beam of light is traveling from Region I to Region IV (refer figure). The refractive index of Region I, II, III and IV are n0,n02,n06andn08 respectively. The angle of incidence θ for which the beam just misses entering Region IV is:
Answer» A beam of light is traveling from Region I to Region IV (refer figure). The refractive index of Region I, II, III and IV are $n_{0}, \frac{n_{0}}{2}, \frac{n_{0}}{6} a n d \frac{n_{0}}{8}$ respectively. The angle of incidence $θ$ for which the beam just misses entering Region IV is:

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