Question

the absolute refractive index of glass and water are 4/3 and 3/2 respectively. If the speed of light in glass is 2×10 raised to 8 m/s. Calculate the speed of light in vaccum and water

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Answer 1

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$Answer.Actually, ng = 3/2 and nw = 4/3.Absolute Refractive Index of a medium = Speed of light in vacuum/Speed of light in the mediumSpeed of light in glass = 2 x 108 m/sSpeed of Light in Vacuum = (3/2) x 2 x 108 m/s = 3 x 108 m/sSpeed of light in water = (3 x 108 m/s)/(4/3)                                        = 2.25 x 108 m/s$

Answer 2

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