Two converging lenses with focal lengths of 40 cm and 20 cm are 10 cm apart....
Two converging lenses with focal lengths of 40 cm and 20 cm are 10 cm apart. A 4.0 cm -tall object is 13 cm in front of the 40 cm -focal-length lens.Calculate the image position.
I keep getting 63 for the image position but its wrong, can someone show me how to do this please?
Homework Answers
1/f = 1/f1 + 1/f2 - d/f1f2
1/f = 1/40 + 1/20 - 10/800
f = 16 cm
Lens formula
1/f = 1/v + 1/u
1/v = 1/f - 1/u = 1/16 - 1/13
v = -69.33 cm
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