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← ScienceWhich outcome arises when spatially incoherent light propagates?
A)Speckle pattern contrast significantly diminishes✓
B)Diffraction patterns show increased resolution
C)Interference fringes become sharply defined
D)Beam divergence reaches the diffraction limit
💡 Explanation
Spatially incoherent light causes a reduction in speckle contrast because the **superposition** of waves with random phases cancels out interference effects; therefore, speckle patterns wash out, rather than showing sharper diffraction or interference with coherent waves.
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