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Which consequence arises when coherent light diverges excessively?

A)Speckle contrast decreases significantly
B)Overall system's resolution degrades notably
C)Signal-to-noise ratio increases linearly
D)Spatial coherence remains mostly uniform

💡 Explanation

Excessive divergence introduces phase variations, suppressing constructive interference based on the principle of wavefront division in Imaging, therefore causing resolution to drop rather than causing less speckle; speckle reduction requires multiple uncorrelated beams, not simple divergence.

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