Question

The velocity of light in vacuum is 3 x 10^8 m/s and in glass is 2 x 10^8 m/s. The refractive index of glass is?​

Answer 1

Explanation:

1.5is your answer

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Answer 2

Answer:

Hence we can use the equation 1 to determine the speed of light in the glass. η=Speed of light in (vacuum/air)Speed of light in medium1.5=3×108Speed of light in mediumSpeed of light in medium=3×1081.5=2×108ms−1. Hence the speed of light in glass is 2×108ms−1.