Question: Shown in the figure below is a system containing two lenses and an object. The focal lengths of the two lenses are f 1 =
Shown in the figure below is a system containing two lenses and an object. The focal lengths of the two lenses are f1 = -15 cm and f2 = 7.5 cm. The two lengths indicated in the figure are L1 = 22.5 cm and L2 = 12 cm.

L2 L1
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