why do we consider lens as a single surface element while drawing ray diagram?
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theme of this unit has been that we see an object because light from the object travels to our eyes as we sight along a line at the object. similarly,we see an image of an object because light from the object reflects off a mirror and travel to our eyes as we sight at the image location of the object. From these two basic premises, we have defined the image location as the location in space where light appears to diverge from. Ray diagrams have been a valuable tool for determining the path taken by light from the object to the mirror to our eyes. In this section of Lesson 3, we will investigate the method for drawing ray diagrams for objects placed at various locations in front of a concave mirror.
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