In a stack of three polarising sheets, the first and the third are crossed while the middle one has its axis at 45^\circ to the axes of the other two. The fraction of intensity of an incident unpolarised beam of light that is transmitted by the stack is

AMU Engineering 2018 solved paper Solved Paper

Section: Physics

Question : 43 of 150

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In a stack of three polarising sheets, the first and the third are crossed while the middle one has its axis at 45° to the axes of the other two. The fraction of intensity of an incident unpolarised beam of light that is transmitted by the stack is

1∕2
1∕3
1∕4
1∕8

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