Waves & Optics Homework: Polarization Through Weakly Scattering Fluid

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Homework Statement


An unpolarised light beam is shone horizontally through a cubic tank filled
with weakly scattering fluid. Can vertically polarized light leave through the sides that are parallel to the beam’s propagation direction?

Homework Equations

The Attempt at a Solution


My thinking is that they can. If the fluid is weakly scattering the chances are that a small amount of light would be able to leave through the top sides and that this would have vertically polarised light. Any ideas on how to approach this problem?
 

Discussion

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If the light is scattered straight up through the top then I don't see how it could be vertically polarised. But if you change it to scattering horizontally through the sides I would agree. Mind you, I'm no expert on this topic.
 
The last image on this page -http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/polar.html
Wouldn't that mean it is possible?