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Question

In the diagram shown ray of light is incident an the first medium boundary at angle 30° the medium has refractive index 2 .

The second layer has refraction index mu divided by 2 A graph is given between deviation and refractive index ' mu  '. The deviation is measured by cansidering the final emergent ray and the incident ray. Value of theta subscript 2  will be

  1. 30
  2. 60
  3. 45
  4. None of these

The correct answer is: 30

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