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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 body starts from rest with an acceleration of 2 m/s². After 5 second,
- A particle covers half of its total distance with speed v1 and the rest half distance
- Suppose for some reasons, radius of earth were to shrink by 1% of present value,
- The total energy of an electron in the first excited state of hydrogen atom
- A common emitter amplifier gives an output of 3 V for an input of 0.01 V.
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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