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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…

NEET UG 2010 — Physics Optics

2010mcqeasy

A ray of light travelling in a transparent medium of refractive index μ\muμ falls, on a surface separating the medium from air at an angle of incidence of 45∘45^{\circ}45∘. For which of the following value of μ\muμ the ray can undergo total internal reflection?

Official previous-year question

Held on 30 Apr 2010 · Verified 9 Jul 2026.

Options

  1. A

    μ=1.33\mu=1.33μ=1.33

  2. B

    μ=1.40\mu=1.40μ=1.40

  3. C

    μ=1.50\mu=1.50μ=1.50

  4. D

    μ=1.25\mu=1.25μ=1.25

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