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Which outcome results when thermal expansion misaligns interferometer mirrors?

A)Fringe contrast diminishes significantly
B)Frequency of light will halve
C)Overall power is doubled
D)Wavelength shifts into infrared

💡 Explanation

Misalignment disrupts constructive and destructive interference effects; therefore fringe contrast degrades because wavefronts no longer precisely overlap, rather than the other incorrect amplitude, frequency, or wavelength changes which are unrelated to mirror alignment.

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