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A ray of light is incident at an angle of incidence i, on one face of a prism of angle A (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is μ, then the angle of incidence i, is nearly equal to
Options
(a) μA
(b) μA/2
(c) A/μ
(d) A/2μ
Correct Answer:
μA
Explanation:
For normally emerge e =0
Therefore r₂ = 0 and r₁ = A
Snell’s Law for Incident ray’s
1 sin i = µ sin r₁ = µ sin A
For small angle i = µA
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons
- The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5Å
- Two particles are oscillating along the same line with the same frequency
- A particle moves in a circle of radius 5 cm with constant speed and time period
- A proton is moving in a uniform magnetic field B in a circular path of radius a
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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