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Which risk increases when a high-powered laser engraver's focusing lens is severely scratched?

A)Reduced surface finish quality
B)Increased plasma formation events
C)Decreased back reflection intensity
D)Elevated laser coherence length

💡 Explanation

Increased plasma formation events occur because lens scratching causes non-uniform energy density creating localized thermal runaway initiating dielectric breakdown in the air. Therefore, plasma risk increases, rather than enhanced finish because beam quality degrades.

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