Will the focal length of a lens for red light be more, same or less than that for blue light?

Define focal length of a lens

Red light is incident on a think converging lens of focal length f. Briefly explain how the focal length of the lens will change,if red light is replaced with blue light.

Is focal length of eye lens fixed? If not, why?

The focal length of a lens is expressed by which of the following:

Briefly explain,how the focal length of a convex lens changes with increase in wavelength of incident light.

If f_v and f_r are the focal lengths of a convex lens fro violet and red light respectively and F_v and F_r are the respective focal length of a concave lens,then we must have

How is the focal length of a spherical mirror affected, when the wavelenght of the light used is increased?