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Which performance reduction occurs when imperfect anti-reflection coating causes variance?

A)Decreased chromatic resolving power
B)Increased light-gathering ability
C)Higher signal-to-noise bandwidth
D)Improved depth of field clarity

💡 Explanation

Interference between reflected waves from coating interfaces reduces transmission efficiency; variations in coating thickness introduce phase differences. Therefore, chromatic resolving power decreases because of less efficient light utilization, rather than increased light gathering or improved clarity alone.

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