An object is placed on an optical bench. A lens with a focal length of 12 cm is placed 20 cm from the object. Where should a second lens, with a focal length of 4.0 cm, be placed if a total magnification +6 is to be obtained?
A)
20 cm from the first lens
B)
35 cm from the first lens
C)
40 cm from the first lens
D)
30 cm from the first lens
E)
25 cm from the first lens
B
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