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A ray of light travelling through glass of refractive index 2 , is incident on glass - air boundary at an angle of incidence 45^ . If refractive index of air is 1 , then the angle of refraction will be [ 45^ = 1 2 , 90^ =1 ]

Options

  1. A30^
  2. B90^
  3. C60^
  4. D45^

Correct answer

B. 90^

Step-by-step solution

(C) = 2 i =45^ _ i i= _ r r 2 45^ = r r =90^

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