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Calculate the speed of light in a medium whose critical angle is 30°. |
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Answer» Solution :Here, `i_( c) = 30^(@)` `therefore` REFRACTIVE index of medium `n=1/(SIN i_( c)) =1/(sin 30^(@)) =1/(1/2) = 2.0` `therefore`Speed of light in the given medium `v=c/n = (3 xx 10^(8))/2 = 1.5 xx 10^(8) ms^(-1)` |
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