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KVPY2011PhysicsRay Optics

A material is embedded between two glass plates. Refractive index n of the material varies with thickness as shown below. The maximum incident angle (in degrees) on the material for which beam will pass through the material is-

Options

  1. A60.0
  2. B53.1
  3. C43.5
  4. D32.3

Correct answer

B. 53.1

Step-by-step solution

array l 1.5 sini =1.2 r r= 1.5 1.2 sini array T / R should not take place array l sinr 45 array

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