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← ScienceWhich phenomenon occurs after the optical path difference?
A)Destructive interference reduces signal strength✓
B)Increased thermal emission is amplified
C)Total internal reflection increases contrast
D)Constructive interference cancels frequencies abroad
💡 Explanation
After an optical path difference that equals half-wavelengths, destructive interference diminishes signal strength, because wave troughs align with crests. Therefore, reduced strength not amplification is more likely to occur, rather than other optical phenomena resulting.
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