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A light ray is incident perpendicular to one face of  90 to the power of 0 prism and is totally internally reflected at the glass-air interface. If the angle of reflection is  45 to the power of 0. We conclude that the refractive index....
.

  1. n >square root of 2 
  2. n > fraction numerator 1 over denominator square root of 2 end fraction
  3. n < square root of 2
  4. n < fraction numerator 1 over denominator square root of 2 end fraction

The correct answer is: n >square root of 2

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