1.

What will be the speed of light in water if it is given that the refractive index of water is 4/3 and the speed of light in air is3 xx 10^(8) m/s?

Answer»

Solution :`._2n_(1) = v_(1)/u_(2) therefore v_(1) = v_(1)/(._(2)n_(1))`
` v_(2) = ( 3XX 10^(8) m//s)/(4//3) = ( 9 xx 10^(8)` m/s
The speed of light in WATER = `2.25 xx 10^(8)`m/s .


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