4. Exercise on 2-lens system used in Experiment 10.2 The two converging lenses shown in the figure are identical with focal length ( / ) of 10 em. The object height h. = 3.5 cm. The object distance d, and the relative positions of the two lenses are given in the figure. (a) Draw a ray diagram on the figure to show the image position (d, ) and size (h, ) formed by the two lenses. (b) Describe the characteristics of the image formed by the two lenses: real or virtual? erect or inverted? . enlarged, or reduced, or unchanged? (c) Use the lens equation 1 1 = to verify your findings from your ray diagram. do d s F F h t F F 30 cm 30 cm