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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 rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- A point charge q is situated at a distance r on axis from one end of a thin
- A parallel plate capacitor as a uniform electric field E in the space between the plates
- In P-N junction having depletion layer of thickness 10⁻⁶ m, the potential across
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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