Unpolarised light of intensity I(0) fall...

Unpolarised light of intensity `I_(0)` falls on a Nicol prism. The light emerging from this Nicol Prism falls on another Nicol whose polarising axis is inclined to that of first by an angle `30^(@)`. The light emerging from the second Nicol has the intensity :

`(I_(0))/(sqrt(2))`

`(I_(0))/(2)`

`(sqrt(3))/(2)I_(0)`

`(3)/(8)I_(0)`

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