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A ray of light travelling in a transparent medium of refractive index µ, falls on surface seperating the medium from air at an angle of incidence of 45⁰. For which of the following value of µ the ray can undergo total internal reflection?
Options
(a) µ = 1.33
(b) µ = 1.40
(c) µ = 1.50
(d) µ = 1.25
Correct Answer:
µ = 1.50
Explanation:
For the initial reflection,
µ >= 1 / sin C >= √2 >= 1.414
µ = 1.50
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two solid discs of radii r and 2r roll from the top of an inclined plane
- A parallel plate air capacitor of capacitance C is connected to a cell of emf
- If 20% of a radiactive element decays in 10 days, then amount of original material left
- A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).
- Suppose for some reasons, radius of earth were to shrink by 1% of present value,
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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