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JIPMER2019PhysicsRay Optics

If velocity of light in air is c, what will be the velocity of light in a medium of refractive index 1.4 ?

Options

  1. A2.1 10^8 ~m / s
  2. B1.4 10^8 ~m / s
  3. C2.8 10^8 ~m / s
  4. DNone of these

Correct answer

A. 2.1 10^8 ~m / s

Step-by-step solution

aligned & Refractive index of medium & = speed of light in vacuum speed in medium & Speed of light in medium & = speed of light in vacuum refractive index & v= c n = 3 8^8 1.4 =2.14 10^8 ~m / s aligned

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