Question

We usually locate the image formed by an object by looking for theintersection of just two of the rays coming from that object, andwe usually choose these two rays to be as simple to draw aspossible. In fact, all the rays coming from the object that passthrough the lens must converge at the location of the image. Inthis problem you will be asked to identify some of these otherrays, which are not so simple to draw.

Part A

The firstfigure shows an object to the left of a converging lens. The focalpoint of the lens is labeled F. Five rays are drawn from the tip ofthe object to the lens, but only one of them is traced through thelens correctly. Choose the ray that is traced correctly.

ray1 ray2 ray3 ray4 ray5

Part B

The secondfigure shows an object to the right of a concave mirror. The focalpoint of the mirror is labeled F. Four rays are shown reflectingoff the mirror, but only one of them is drawn correctly. Choose theray that is traced correctly.

ray1 ray2 ray3 ray4

Answer 1

Part(a)
ray 4

Part(b)
ray 3