Question

please solve this. very important
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Answer 1

The refractive index of a substance is the ratio of the velocity of light in vacuum to the velocity of light in the substance. The velocity of light in vacuum is 3.00 • 10^8m/s, and the speed of light in glass as given, converted to meters is 2 • 10^8m/s, hence the refractive index of glass is 3/2 or 1.5 (10^8 cancels out). Kaiser T, MD.

Answer 2

Answer:

speed of light in glass is. 2x 10^5 m/sec

n=c/v= 3x10^8/2x 10^5 m/sec=1500

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