Question

The chromatic aberration due to a lens depends upon:

• A. focal length of the lens.
• B. dispersive power of the material of the lens.
• C. both A and B.
• D. none of the above.

Answer 1

The correct option is C both A and B.

The chromatic aberration due to a lens depends upon focal length of the lens and dispersive power of the material of the lens.

Because Chromatic aberration is caused by the different colors, and hence wavelengths of light having different refractive indices. This means that if white light is refracted in a prism the light is split into its different wavelengths, seen as a spectrum of colors (think rainbow).