The velocity of light in medium of Refractive Index 1.5 will be

The speed of light in air is 3 x 108 m/s. The velocity of light in the medium of refractive index 1.5 will be

  • 1.5 x 108 m/s
  • 2 x 108 m/s
  • 1 x 108 m/s
  • 2.5 x 108 m/s
Monis Rasool Professor Asked on 6th May 2015 in Physics.
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Ans.-  2 x 108 m/s

Solution:-
Refractive Index = Speed of light in air/ speed of light in medium.
Speed of light in air = 3 x 108 m/s
Refractive Index = 1.5
Speed of light in medium = ?
Speed of light i n medium = Speed of light in air / Refractive Index.
Speed of light in medium = 3 x 108  / 1.5
= 2 x 108 m/s
Therefore the of light in the medium of refractive index 1.5 will be  2 x 108 m/s
                       

Anurag Mishra Professor Answered on 6th May 2015.
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