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Using parabolic burning mirrors in antiquity leads to which limitation?

A)Achieved temperature rapidly diminishes over distance
B)Focal point rapidly changes with mirror shape
C)Mirror tarnishing decreases overall solar reflectance
D)Atmospheric dispersion causes chromatic aberration artifacts

💡 Explanation

Temperature decreases because radiative heat flux is inversely proportional to the *squared distance*. The mechanism affecting this limitation is radiative heat transfer; therefore, the focal point becomes ineffective quickly, rather than other optical consequences or material issues.

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