|Nov13-08, 02:43 PM||#1|
1. The problem statement, all variables and given/known data
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?
2. Relevant equations
3. The attempt at a solution
Thus, delta f = .9746 mm but that's wrong for some reason... but it's been a long week...
Can someone help me out here?
|Nov13-08, 02:58 PM||#2|
Shouldn't the 1/x be on the other side?
|Nov13-08, 04:15 PM||#3|
*sigh* Yep, that'd be the issue... need either more sleep or more caffeine I guess...
Thank you very much... I'm gonna go take a nap...
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