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When the angle of incidence is 60° on the surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is
Options
(a) √2 x 10⁸ m/s
(b) √3 x 10⁸ m/s
(c) 2 x 10⁸ m/s
(d) 3 x 10⁸ m/s
Correct Answer:
√3 x 10⁸ m/s
Explanation:
From Brewster’s law μ = tan iᴘ
c/v = tan 60° = √3
v=c / √3 = 3 × 10⁸ / √3
= √3 × 10⁸ m/sec
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wire is suspended vertically from one of its ends is stretched by attaching a weight
- 24 cells of emf 1.5 V each having internal resistance of 1 ohm are connected
- A spherical planet has a mass Mp and diameter Dp. A particle of mass
- If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
- A particle of mass m is projected with a velocity v making an angle of 45°
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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