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If the absolute refractive indices of glass and water are 3 / 2 and 4 / 3 respectively, what will be the ratio of velocity of light in glass and water?

Options

  1. A3: 4
  2. B4: 3
  3. C8: 7
  4. D8: 9

Correct answer

D. 8: 9

Step-by-step solution

Given, aligned & g=3 / 2 v _ =4 / 3 & ~g = c / vg _ = c / v _ & g / _ = v _ / vg 3 / 2 / 4 / 3= v _ / vg & 9 / 8= v _ / vg or vg / v _ =8 / 9 & Vg : v _ =8: 9 aligned

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