AIPMT PRELIMS2010Physics-Optics

AIPMT PRELIMS 2010 Physics Total Internal Reflection MCQ Question

Type: MCQ-conceptual-Medium-Class 12

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 = 1.25

B

μ = 1.33

C

μ = 1.40

D

μ = 1.50

Correct Answer

Option D

Detailed Explanation

Total internal reflection occurs when the refractive index is greater than √2, which is approximately 1.414. Therefore, μ = 1.50 will allow total internal reflection.

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