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← ScienceFor an anti-reflective coating on optics, which mechanism minimizes reflection?
A)Destructive interference of reflected waves✓
B)Diffraction around surface imperfections increases
C)Polarization filters block stray reflections
D)Refractive divergence of incident light
💡 Explanation
If the coating thickness provides a 180-degree phase shift upon reflection from the top and bottom surfaces, then destructive interference eliminates reflection, because the waves cancel each other. Thus, reflections are minimized, rather than enhanced or unchanged, by other phase shifts.
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