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← ScienceWhich outcome occurs when a soap film thins?
A)Increased destructive interference✓
B)Decreased path length difference
C)Enhanced refractive index change
D)Diminished constructive interference
💡 Explanation
Destructive interference increases as the film thins because decreasing thickness reduces the path length difference for reflected light waves, approaching a half-wavelength difference. Therefore destructive interference dominates, rather than constant or constructive interference which would require specific thickness conditions.
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