The speed of light in water is 2.25 x 108 m/s. If the speed of light in vacuum be 3 x 108 m/s, calculate the refractive index of water.
Speed of light in vacuum = 3.0 x 108m/s
Speed of light in water = 2.25 x 108m/s
Refractive index of water = ?
We know that
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