Consider an object with s = 12cm that produces an image with s' = 15cm

Consider an object with s = 12cm that produces an image with s' = 15cm. Note that whenever you are working with a physical object, the object distance will be positive (in multiple optics setups, you will encounter "objects" that are actually images, but that is not a possibility in this problem). A positive image distance means that the image is formed on the side of the lens from which the light emerges.Find the focal length of the lens that produces the image described in the problem introduction using the thin lens equation.Express your answer in centimeters, as a fraction or to three significant figures.

Q) Consider an object with s = 12cm that produces an image with s' = 15cm. Note that whenever you are working with a physical object, the object distance will be positive (in multiple optics...