# The Thin-Lens Equation: Distance from lens 1 to the final image; What is the magnification of this image?

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See diagram in the attached file.

Two lenses that are L = 37 cm apart are used to form an image, as shown in Figure 26-52. Lens 1 is diverging and has a focal length f1 = -7 cm; lens 2 is converging and has a focal length f2 = 17 cm.

Figure 26-52

(a) Determine the distance from lens 1 to the final image. (Include the sign of each answer.)

(b) What is the magnification of this image?

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