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A glass prism is immeresed in water as shown in the figure. When a beam of light incident is incident normally on the face ab , it is internally reflected at the face ad . If the refractive index of glass is 1 . 5 and that of water is 4 3 , then

Options

  1. Asin θ < ( 2 / 3 )
  2. Bsin θ > ( 8 / 9 )
  3. C( 2 / 3 ) < sin θ < ( 8 / 9 )
  4. DNone of these

Correct answer

B. sin θ > ( 8 / 9 )

Step-by-step solution

θ > θ c sin θ > sin θ c sin θ > 8 9 .

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