A thin convex lens L is positioned midway between two diaphragms: D1, 4.0 cm to its left, and D2, 4.0 cm to its right. The lens has a diameter of 12 cm and a focal length of 12 cm. The holes in D1 and D2 have diameters of 12 cm and 8.0 cm, respectively. An axial object point is 20 cm to the left of D1.
(a) What is the image of D1 in the object space (i.e., as imaged by any lens to its left with light traveling left)?
(b) What is the image of L in the object space?
(c) What is the image of D2 in the object space? Give the size and location of that aperture’s image.
(d) Locate the entrance pupil and the aperture stop.
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