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← ScienceWhich consequence develops when a precision optical flat experiences minute surface variations?
A)Degraded fringes from wave interference✓
B)Increased reflection off the surface
C)Lower signal from phase distortion
D)Elevated thermal conduction effects
💡 Explanation
Slight variations cause degradation because of thin-film interference creating constructive and destructive patterns. This affects fringe visibility. Therefore, fringes degrade because of uneven interference, rather than altered reflectivity or solely lowered phase, which requires more specific optical designs.
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