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A piece of grass is 15.0 cm to the left of a converging lens with 11.9-cm...

A piece of grass is 15.0 cm to the left of a converging lens with 11.9-cm focal length. A second lens is positioned 10.0 cm to the right of the first lens and is observed to form a virtual image at the position of the piece of grass.

1. What is the focal length of the second lens?

2. What is the overall magnification of this system?

3. What is the nature of the final image? (real/virtual and upright/inverted)

Put the right amount of significant figures. Show work.

Edit: It doesn't give the focal length of the second lens. I assume you need to find it. I tried doing this problem on my own, but I got it wrong.

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