Physics

Problem

Two thin lenses are arranged coaxially in air. Lens 1 is a converging lens with focal length

12\,\text{cm}

, and Lens 2 is a diverging lens with focal length

-18\,\text{cm}

. The lenses are separated by

40\,\text{cm}

. A

1.5\,\text{cm}

-tall object is placed

24\,\text{cm}

in front of Lens 1 (on its left side). What is the height of the final image formed by the two-lens system? (Use a positive height for an upright final image.) a)

+0.79\,\text{cm}

-1.5\,\text{cm}

-0.79\,\text{cm}

-0.71\,\text{cm}

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