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← ScienceWhich diffraction pattern quality decrease results from coherence loss?
A)Fringe visibility diminishes gradually✓
B)Spot size oscillates irregularly
C)Wavelength experiences blueshift variance
D)Polarization angle precesses randomly
💡 Explanation
Reduced spatial coherence causes blurring of the diffraction pattern because the fringes produced spread out and interfere destructively via increased path length differences, therefore the fringe visibility decreases gradually rather than spot size variations due to intensity fluctuations.
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