Two polaroids \(A\) and \(B\) are placed in such a way that the pass-axis of polaroids are perpendicular to each other. …

Two polaroids \(A\) and \(B\) are placed in such a way that the pass-axis of polaroids are perpendicular to each other. Now, another polaroid \(C\) is placed between \(A\) and \(B\) bisecting the angle between them. If intensity of unpolarised light is \(I_0\) then intensity of transmitted light after passing through polaroid B will be: