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Which outcome results when imperfections cause thin-film interference in telescope mirrors?

A)Reduced image contrast
B)Increased central obscuration
C)Suppressed diffraction rings
D)Enhanced chromatic aberration

💡 Explanation

Reduced image contrast results from spurious thin-film interference introduced by imperfections on reflective surfaces. Multiple reflections combine destructively and constructively because of varying film thickness, therefore certain wavelengths are attenuated, rather than uniformly reflected as desired.

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