Solution Found!
The focal length of a simple lens depends on the color
Chapter 34, Problem 16DQ(choose chapter or problem)
QUESTION:
Problem 16DQ
The focal length of a simple lens depends on the color (wavelength) of light passing through it. Why? Is it possible for a lens to have a positive focal length for some colors and negative for others? Explain.
Questions & Answers
QUESTION:
Problem 16DQ
The focal length of a simple lens depends on the color (wavelength) of light passing through it. Why? Is it possible for a lens to have a positive focal length for some colors and negative for others? Explain.
ANSWER:
Solution 16DQ
Amount to Cauchy, the wavelength of color of light and refractive index is related as:-
=