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Which consequence results when crossed polarizers imperfectly extinguish light?

A)Residual light remains visible
B)Wavelength shift always occurs
C)Increased Fresnel reflection appears
D)Material fluorescence always activates

💡 Explanation

Residual light leakage occurs because the **Malus's law** dictates intensity reduction follows polarizing angle; therefore the final intensity exceeds ideal darkness rather than some alternate effect, because only properly aligned light is eliminated.

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