Figure 34-46a shows the basic structure of an old film
Chapter , Problem 90(choose chapter or problem)
Figure 34-46a shows the basic structure of an old film camera. A lens can be moved forward or back to produce an image on film at the back of the camera. For a certain camera, with the distance i between the lens and the film set at f 5.0 cm, parallel light rays from a very distant object O converge to a point image on the film, as shown. The object is now brought closer, to a distance of p ! 100 cm, and the lensfilm distance is adjusted so that an inverted real image forms on the film (Fig. 34-46b). (a) What is the lensfilm distance i now? (b) By how much was distance i changed?
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