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When early telescope makers encountered chromatic aberration, which optical mechanism produced the colored fringes?

A)Wavelength-dependent refractive index
B)Partial reflection from lens
C)Diffraction around the objective
D)Interference at lens surfaces

💡 Explanation

Chromatic aberration arises because the refractive index varies with wavelength, causing different colors to focus at different points. Consequently, dispersion of light creates colored fringes rather than a sharp image because red and blue light focus unevenly.

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