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posted by  ItxguyI on 7/28/2008 1:55:21 PM  |  status: Live  

will rate well

Course Textbook Chapter Problem
General Physics N/A N/A N/A
Question Details:
An object with a height of 2.77 cm is placed 38.7 mm to the left of a lens with a focal length of 35.0 mm.
(a) Where is the image located?
m
(b) What is the height of the image?
cm
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posted by Steve (retired) on 7/28/2008 3:41:06 PM  |  status: Live
Asker's Rating: Lifesaver   
ItxguyI's comment:
"thnx. lifesaver!"
Response Details:
height of object ho = 2.77cm
object distance u = 38.7mm = 3.87cm
focal length of lens f = 3.5cm
Using the lens formula 1 / f = 1 / u + 1 / v
                                      v = uf / ( u - f )
                                         = ...... cm to the right of the lens
 
\b) hi / ho = - v / u
     the height of the image hi = ho ( - v / u )
                                           = ....... inverted
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