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Manipal MET2023PhysicsRay Optics

A ray falls on a prism A B C(A B=B C) and travels as shown in figure. The minimum refractive index of the prism material should be

Options

  1. A4 / 3
  2. B2
  3. C1.5
  4. D3

Correct answer

B. 2

Step-by-step solution

Angle i at both focus will be 45^ . For TIR to take place, i _c or i _c 1 2 1 or 2

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