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Light travels with a velocity 1.5 x 108 m/s in a medium. On entering second medium its velocity becomes 0.75 x 108 m/s. What is the refractive index of the second medium with respect to the first medium? |
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Answer» Given : Velocity of light in a first medium = V1 = 1.5 x 108 m/s Velocity of light in second medium = V2 = 0.75 x 108 m/s Refractive index of second medium = 2n1 = ? 2n1 = 1 / 2 2n1 = 1.5 x 108 / 0.75 x 108 = 2 Hence, the refractive index of second medium with respect to first medium is 2. |
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