if the velocity of light in a medium is 3/4 times of the velocity of light in vacuum, then twhat is the refractive index of that medium is
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velocity of light in vacuum v = 3x 10^8m/s
let the velocity of light in the given medium V = 3/4 the speed of light in vacuum
let R be the refractive index of the given medium
R = speed of light in vacuum / speed of light in given medium
R= 3 x 10^8/ (3/4 x 3 x 10^8)
R= 4 x 3 x 10^8/3x3 10^8
R= 4/3
R=1.33
Hence the refractive index of the given medium is 1.33
let the velocity of light in the given medium V = 3/4 the speed of light in vacuum
let R be the refractive index of the given medium
R = speed of light in vacuum / speed of light in given medium
R= 3 x 10^8/ (3/4 x 3 x 10^8)
R= 4 x 3 x 10^8/3x3 10^8
R= 4/3
R=1.33
Hence the refractive index of the given medium is 1.33
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