If the speed of light in air is 3*108 m/s and speed of light in water is reduced by a factor of 1.3 when compared with that of speed of light in air. Find out the speed of light in water?

The speed of light in water is reduced by a factor of 1.33. i.e. Speed of light in water is 3*108/1.33 = 2.87*108 m/s.

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