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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 proton of mass 1.6×10⁻²⁷ kg goes round in a circular orbit of radius 0.10 m under
- A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal
- Acceleration of a particle, executing SHM, at its mean position is
- A small block of super dense material has mass 3 x 10²⁴ kg.It is situated at a height
- A motorcycle moving with a velocity 72 kmh⁻¹ on a flat road takes a turn
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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