Question

Chromatic aberration arises in their lens due to:

• A. Difference in the focal length for different wavelengths
• B. Dispersion of light
• C. Diffraction of light
• D. Reflection of light

Hint:

Chromatic aberration can be minimized by using achromatic lenses that combine different types of glass to counteract dispersion.

Answer 1

The Correct Option is B

Chromatic aberration occurs because different wavelengths of light are refracted by different amounts when passing through a lens. This happens due to the phenomenon of dispersion, where light of different colors travels at different speeds in the material of the lens, resulting in different focal lengths. This causes a failure to focus all colors of light at a single point, leading to chromatic aberration.
Thus, chromatic aberration arises due to \( \text{Dispersion of light} \).