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← ScienceWhich optical effect is diminished when spatially incoherent light illuminates an interferometer?
A)Fringe visibility✓
B)Chromatic aberration
C)Refractive index change
D)Specular reflection
💡 Explanation
Reduced spatial coherence decreases fringe visibility because the interference pattern washes out due to phase differences across the beam. Therefore, fringe visibility reduces, rather than chromatic aberration, which relates to wavelength-dependent refraction, being the dominant effect.
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