1.

if speed of light in water is 2.2*10^8 , then the critical angle of incidence for light going from water to air is

Answer» SPEED of light in vacuum = 3.0 x 108m/sSpeed of light in WATER = 2.25 x 108m/sRefractive index of water = ?We know thatRefractive index of water = speed of light in vacuum/speed of light in waterRefractive index of water = 3 x 108/2.25 x 108 = 1.33Explanation:Kashuuu~


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