The index of refraction of a substance is 1.5. What percentage of the speed of light...
The index of refraction of a substance is 1.5. What percentage of the speed of light in vacuum is the speed of light in the substance? Round your answer to 0 decimal place.
Homework Answers
mu = Vc/Vm
Where mu = refractive index of the medium (1.5 for glass)
Vc = velocity of light in vacuum (3x10^8 m/s)
Vm = velocity of light in medium.
So Vm = Vc/Vm
= 3x10^8 / 1.5
= 2x10^8 m/s
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