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← ScienceWhich consequence results when imperfections induce wavefront overlap in photolithography?
A)Constructive and destructive interference✓
B)Increased depth of the feature
C)Uniform photoresist layer formation
D)Improved etch selectivity of materials
💡 Explanation
Aberrations cause some light waves to travel different path lengths. Therefore, **optical interference** occurs at the wafer due to the unequal path lengths, leading to areas of constructive and destructive interference rather than ideally uniform exposure.
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