How does the average speed of light in glass compare with its speed in a vacuum?
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the speed of light in air is 3*10^8m/s and the refractive index of glass is 1.5
so the speed of light in glass is calculated by the formula
refractive index =c/v
3*10^8/1.5= speed of light in glass
speed of light in glass=2*10^8m/s
so the speed of light in glass is calculated by the formula
refractive index =c/v
3*10^8/1.5= speed of light in glass
speed of light in glass=2*10^8m/s
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