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Find the value of the angle of emergence from the prism. Refractive index of the glass is 3 .

Options

  1. A45 °
  2. B30 °
  3. C60 °
  4. D90 °

Correct answer

C. 60 °

Step-by-step solution

No refraction at face AC. Apply Snell's law at face BC, we get, μ 1 sin i = μ 2 sin r 3 sin 30 ° = 1 × sin e 3 2 = sin e ⇒ e = 60 °

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