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Which consequence results when chromatic aberration occurs in telescopes?

A)Decreased image sharpness and colour fringing
B)Increased thermal expansion of the mirrors
C)Reduced light-gathering power of objective
D)Distorted diffraction patterns from secondary optics

💡 Explanation

Chromatic aberration causes decreased sharpness because different wavelengths focus at different points, leading to colour fringing caused by increased **interference** within the lens material; therefore, image quality degrades, rather than enhancements to light collection or purely thermal effects.

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