Question

when objects at different distance are seen by the eye, which of the following remains constant?
1.) the focal length of eye lens
2.) object distance from eye lens
3.) radius of curvature of eye lens
4.) distance of image from eye lens
explain????

Answer 1

Focal length of eye lens and radius of curvature of eye lens

Answer 2

Answer is :
4.) distance of image from eye lens is always fixed.
Explanation: For an object distance of infinity, the focal length of the eye is equal to the fixed distance between ... The cornea and the lens work together to focus images on the retina, which is at a fixed distance always.

Thanks .