p. Then p is a virtual image of P.Draw pq perpendicular to the axis; pq is the image of PQand it is virtual, erect and magnified. This will be found tobe the case whenever PQ lies between A and F. Case (2). The object is at a distance greater than f, lessthan 2f. Let PQ, fig. 93, be an object,… … Fig. 93. centre and produce it to p. It will be found that RF pro-duced intersects Ap, let them meet at p. Draw pq perpen-dicular to the axis. Then pq is an image of PQ. In thiscase the image is real, inverted and magnified. Case (3). The object is at a distance from the lens greaterthan 2f. Let…
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