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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?
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- μ = 1.33
- μ = 1.40
- μ = 1.50
- μ = 1.25
Correct Option: C
| For total internal reflection, μ > | > √2 ≥ 1.414 | |
| sin C |
⇒ µ = 1.50
