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Which 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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