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Lenses
Given:
F
i
n
d
:
cm
s
8
.
11
?
f
4
1
M
An object is placed 11.8 cm from a lens. The image of the object is upright but only 1/4 the size of
the object. Find the focal length of the lens. (Give your answer as a positive number for a converging lens
and as a negative number for a diverging lens.)
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Unformatted text preview: Solutions a.) To find f we can use the following formula: s s M s Ms f s s 1 1 1 f s s s s 1 1 1 M Ms M s Mss s Ms Ms s s s s s f 1 M Ms f...
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This note was uploaded on 01/26/2012 for the course PHYSICS 211 taught by Professor Selig during the Fall '10 term at University of Illinois, Urbana Champaign.
 Fall '10
 Selig

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