1
answer
0
watching
55
views
23 Nov 2019
<p>To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera with a telephoto lens (f = 200.0 mm) is to be focused on an object located first at a distance of 3.5 m and then at 49.0 m. Over what distance must the lens be movable?</p>
<p>To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera with a telephoto lens (f = 200.0 mm) is to be focused on an object located first at a distance of 3.5 m and then at 49.0 m. Over what distance must the lens be movable?</p>
Jean KeelingLv2
12 Apr 2019
