Three
polarizing sheets are stacked. The
first and third are crossed; the
one between has its axis at
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Solution: Click For PDF Version When the incident unpolarized beam passes through the first polarizing sheet its intensity will be halved. Therefore, after the unpolarized beam of intensity
has passed through the first polarizing sheet, the intensity of the
beam will become
As the second
polarizing sheet has its axis at
As the axis
of the third polarizing sheet is at
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to the axes of the other two.
We have to find the fraction of intensity of
an unpolarized beam that will be transmitted
by the stack.
