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← ScienceWhich optical effect results when non-parallel coherent wavefronts coincide?
A)Spatial fringe localization decreases sharply✓
B)Speckle contrast becomes virtually extinguished
C)Wavelength remains unchanged completely unaltered
D)Doppler broadening greatly diminishes abruptly
💡 Explanation
Decreased spatial fringe localization results from interfering non-parallel coherent waves, because the *interference* creates fringes detectable only within a limited volume defined by the wavefront intersection. Therefore fringe visibility drops, rather than uniform speckle, due to coherence constraints.
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