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A transparent cylindrical rod of length l=50 ~cm , radius R=10 ~cm and refractive index = 3 lies onto a horizontal plane surface. A ray of light moving perpendicular to its length is incident on the rod horizontally at a height h above the plane surface such that this ray emerges out of the rod at a height 10 cm above the plane surface. Therefore, h is

Options

  1. A1.34 cm.
  2. B1.73 cm.
  3. C10.0 cm
  4. D18.66 cm.

Correct answer

D. 18.66 cm.

Step-by-step solution

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