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Which outcome characterizes transmissive grating use near Brewster's angle?

A)Enhanced contrast of certain grating orders
B)Diffraction efficiency exhibits polarization independence
C)Reduced grating efficiency in all orders
D)Complete suppression of specular reflection

💡 Explanation

At Brewster's angle, one polarization is not reflected; this is because the **interference** between reflected waves is destructive for that polarization, therefore causing enhanced transmission of the orthogonal polarization and higher contrast, rather than overall reduced grating efficiency under orthogonal incidence conditions.

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