1.

A beam of light crept from air to water. If the refractive index for water is 1.5; air refractive index is 1 and the speed of light propagation in the air is 3 × 10 ^ 8 so determine the speed of light propagation in water?

Answer»

na = 1.5 NU = 1 vu = 3x10⁸ m / s Asked: Va? ANSWERED: Va / Vu = nu / na Va / 3x10⁸ = 1 / 1.5 Va = 1 / 1.5 x 3x10⁸ Va = 2x10⁸ m / s



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