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← ScienceWhich consequence results when imperfections cause surface variations comparable to wavelength in interferometry?
A)Reduced fringe visibility appears✓
B)Higher coherence length achieved
C)Increased spectral resolution occurs
D)Improved measurement accuracy occurs
💡 Explanation
Surface variations impact path differences, and interference patterns degrade because of destructive and constructive addition. Therefore, fringe visibility decreases rather than improving resolution or accuracy. The mechanism is wavefront interference, not coherence.
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