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If speed of light in air is 3 10^8 ~m / s , the speed of light in glass (with refractive index 1.5 ) would be

Options

  1. A2 10^8 ~m / s
  2. B4.5 10^8 ~m / s
  3. C3 10^8 ~m / s
  4. D1.5 10^8 ~m / s

Correct answer

A. 2 10^8 ~m / s

Step-by-step solution

aligned Speed of light in glass & = Speed of light in air Refractive index & = 3 10^8 1.5 =2 10^8 ~m / s aligned

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