Two lenses with focal lengths (f_{1}=100 mathrm{~mm}) and (f_{2}=) (200 mathrm{~mm}) are placed facing each other a

Question:

Two lenses with focal lengths $f_{1}=100 \mathrm{~mm}$ and $f_{2}=$ $200 \mathrm{~mm}$ are placed facing each other a distance $d=$ $550 \mathrm{~mm}$ apart, with lens 1 to the left of lens 2 . What is the location of the image formed of an object placed $150 \mathrm{~mm}$ to the left of lens 1 ?

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