Question

4) 25cm
10. A ray of light travelling in a transparent medium of refractive index n falls on the surface separating the
medium from air at an angle of incidence 45°. For which of the following values of n, the ray can
undergo total internal reflection
1) 1.33
2) 1.40
3) 1.25
4) 1.44
95​

Answer 1

Explanation:

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