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For a diven medium, the polarising angle...

For a diven medium, the polarising angle is `60^(@)`. What will be the critical angle for this medium ?

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Here, `i_(p) = 60^(@), C = ?` ltbr. `mu = tan i_(p) = tan 60^(@) = sqrt(3)` ,brgt `sin C = (1)/(mu) = (1)/(sqrt(3)) = 0.57773`,
`:. C = sin^(-1) (0.57773) = 35^(@)16'`
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