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Question

The ratio sinisinr where i and r are the angles of incidence and refraction respectively is called the _________ of the second medium (B) with respect to the first medium (A).
  1. optical density
  2. power
  3. refractive index
  4. none

A
optical density
B
power
C
none
D
refractive index
Solution
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By Snell's law of refraction, sinisinr=μ2μ1= ratio of refractive index of second medium w.r.t. the first medium.

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