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ObviousManiac
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Homework Statement
A helium-neon laser emits a beam of unpolarized light thatpasses through three Polaroid filters, as shown in the figure . The intensity of the laser beam is I[itex]_{o}[/itex].
Suppose the third filter were at an angle of 50˚, what would be the intensity at point C?
Homework Equations
I = Io cos^2(x)
I = Io/2 (Unpolarized light through transmission axis)
The Attempt at a Solution
I've tried a bunch of things...
First I calculated the intensity at point B, which I found to be .375 Io via (1/2)Io*cos^2(30˚)
Then I tried .375Io*cos^2(50˚)
and also tried replacing .375 with .375/2 and just 1/2
But I can't get my teacher's answer, which is .331 Io
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