Two converging lenses with foci of f1=10 cm and f2=20 cm, respectively, are separated by 20 cm, as indicated in the figure. An object is placed 15 cm to the left of the first lens. Find analytically and graphically the position and magnification of the final image, as well as its final size, due to the combination of the two lenses. Indicate if the image is vertical, inverted, real or virtual.

Two converging lenses with foci of f1=10 cm and f2=20 cm, respectively, are separated by 20 cm, as indicated in the figure. An object is placed 15 cm to the left of the first lens. Find analytically and graphically the position and magnification of the final image, as well as its final size, due to the combination of the two lenses. Indicate if the image is vertical, inverted, real or virtual.