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# Intensity Dependence on Order of Polarizers

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Case A in the figure below shows unpolarized light incident on a pair of linear polarizers from the left. The first polarizer’s transmission axis is along the y-direction, the second polarizer’s transmission axis is rotated $\theta=30^o$ from the y-axis.

Case B shows the two polarizers, oriented in the same way, but with unpolarized light incident from the right. Assume the unpolarized light’s intensity is the same in both cases ($I_{oA}=I_{oB}$)