Two lenses, the first with focal length $10.0 \mathrm{~cm}$ and the second with focal length $-12.5 \mathrm{~cm}$, are separated by $20.0 \mathrm{~cm}$. An object of height $2.40 \mathrm{~cm}$ is placed $15.0 \mathrm{~cm}$ in front of the first lens. Which of the following characteristics does the final image have?
A) virtual and upright
B) real and upright
C) virtual and diminished in size
D) virtual and inverted
E) real and inverted

Question

Quizplus · Accepted Answer

The first lens, being positive, acts as a converging lens and forms a real and inverted image. This image then acts as the object for the second lens, which is negative and thus a diverging lens. The combination of these effects results in a final image that is real and inverted.

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Two Lenses, the First with Focal Length $10.0 \mathrm{~cm}$ And the Second with Focal Length