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← ScienceWhich outcome occurs when thin-film coatings suffer delamination?
A)Iridescent colors shift due to chromaticity✓
B)Reflectivity diminishes because of absorbance
C)Scattering increases with surface roughness
D)Adhesion increases, preventing further cracking
💡 Explanation
Delamination causes uneven film thickness, thus the optical path difference varies, so constructive and destructive Thin Film Interference produces shifting iridescence patterns because the coating is no longer uniform; therefore, color bands appear, rather than homogenous reflection.
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