AIPMT PRELIMS 2010 Physics Total Internal Reflection MCQ Question
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?
μ = 1.25
μ = 1.33
μ = 1.40
μ = 1.50
Correct Answer
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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