Ray Optics and Optical Instruments - Result Question 10
10. A ray of light travelling in a transparent medium of refractive index , falls on a surface separating the medium from air at an angle of incidence of . For which of the following value of the ray can undergo total internal reflection?
(a)
(b)
(c)
(d)
[2010]
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Answer:
Correct Answer: 10. (c)
Solution:
- (c) For total internal reflection,