From the diagram, the correct equation for the refractive index n of the medium is

From the diagram, the correct equation for the refractive index n of the medium is
  • A.
    n = tan i
  • B.
    n = (frac{sin i}{sin 90^o})
  • C.
    n = (frac{sin i}{cos (90^o – i)})
  • D.
    n = sin 90oC
Correct Answer: Option B
Explanation
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