Question

Describe monochromatic aberration. How can the defects be removed?
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Answer 1

Answer:

In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point.[1] It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. The refractive index of most transparent materials decreases with increasing wavelength.[2] Since the focal length of a lens depends on the refractive index, this variation in refractive index affects focusing.[3] Chromatic aberration manifests itself as "fringes" of color along boundaries that separate dark and bright parts of the image.

vte Optical aberration

Answer 2

Answer:

That occurs in quasimonochromatic light .These aberration do not consider the effect of frequency of light has on its propagation through a system . Real light is never monochromatic it always is made of a band of frequencies.

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