Question
The refractive index of glass is 1.5. What is the speed
of light in glass? Speed of light in vacuum is 3.0 x 108 m/s.Solution
Refractive index of glass is given as, µ = 1.5 Speed of light, c = 3.0 x 108 m/s Speed of light in glass is given by the formula, v = c/µ => v = 3 x 108/1.5 = 2 x 108 m/s
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