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Two lenses that are L = 38 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 = 16 cm.

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

**What is the magnification of this image?**

I got [a] correct with an answer of 62.3003 cm, using di1 = (1/f1 - 1/do1)^-1. For part

I got [a] correct with an answer of 62.3003 cm, using di1 = (1/f1 - 1/do1)^-1. For part

**I did the following:**

m = (m1)(m2) - (-do/do1)(-di2/do2) = (di1)(di2)/(do1)(0.38m-di1) = -0.188, which is wrong. Anyone able to help me out? Thanks.m = (m1)(m2) - (-do/do1)(-di2/do2) = (di1)(di2)/(do1)(0.38m-di1) = -0.188, which is wrong. Anyone able to help me out? Thanks.