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Which outcome results when temperature increases on interferometer mirrors?

A)Fringe shift reduces measurement accuracy
B)Higher reflectivity boosts signal strength
C)Wavelength decreases towards shorter spectra
D)Increased coherence improves signal clarity

💡 Explanation

Increased temperature causes thermal expansion, changing the path length, adding destructive and constructive interference. This fringe shift occurs because thermal expansion alters optical path length, therefore reduces the precision, rather than boosting reflectivity.

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