Polarized Light Is to Have Its Polarization Plane Rotated by 90°

question 3

Multiple Choice

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.

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