P35_021 - Then i = f f x x Now let i = f x where x is positive if the image is outside the focal point and negative if it is inside Then x = i −

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21. For a thin lens, (1 /p )+(1 /i )=(1 /f ), where p is the object distance, i is the image distance, and f is the focal length. We solve for i : i = fp p f . Let p = f + x ,whe re x
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Unformatted text preview: Then, i = f ( f + x ) x . Now let i = f + x , where x is positive if the image is outside the focal point and negative if it is inside. Then, x = i − f = f ( f + x ) x − f = f 2 x and xx = f 2 ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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