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A point source S of light is placed at a depth d below the surface of water in a large and deep lake. Fraction of light that escapes in space above directly from water (refractive index = ) surface is given by

Options

  1. A1- 1 ^2
  2. B1 2 1- 1 ^2
  3. C1 2 1- 1- 1 ^2
  4. Ddepends on d and increases with increasing d

Correct answer

C. 1 2 1- 1- 1 ^2

Step-by-step solution

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