Polarized light is to have its polarization plane rotated by 90°. In which of the following cases does the final beam have the greatest intensity?
a. 3 polarizing filters, each rotate beam by 30°.
b. 2 polarizing filters, both rotate beam by 45°.
c. 1 polarizing filter, rotating beam by 90°.
d. None of the above, polarized light can't be rotated.
A
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