An older camera has a lens with a focal length of 45 mm and uses 36-mm-wide film to record its images. Using this camera, a photographer takes a picture of the Golden Gate Bridge that completely spans the width of the film. Now he wants to take a picture of the bridge using his digital camera with its 10-mm-wide CCD detector. What focal length should this camera's lens have for the image of the bridge to cover the entire detector?
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An older camera has a lens with a focal length of 45 mm and uses 36-mm-wide film to record its image...
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