- #1
haxxorboi
- 24
- 0
Homework Statement
Suppose the lens in a human eye has far focal length equal to f0 = 40.1 mm, for distant objects to be in focus.
A. An object K is 1.69 m from the lens. How much should the focal length change to focus on the object K?
B.What is the magnification ( = image size divided by object size) for the object K?
Homework Equations
1/di+1/do=1/f
The Attempt at a Solution
A. 1/1690+1/x=1/40.1
x=41.0746 mm
Thus, delta f = .9746 mm but that's wrong for some reason... but it's been a long week...
B. -f2/f1=M
Can someone help me out here?