Question

Two converging lenses having focal lengths of f1 = 11.0 cm and f2 = 20.0 cm are placed d = 50.0 cm apart, as shown in the figure below. The final image is to be located between the lenses, at the position x = 28.1 cm indicated. On the left, an arrow originating from a long horizontal line points upward and is labeled "Object." A vertical, convex lens, labeled "f1," is centered upon the horizontal line and is positioned a distance p to the right of the Object arrow. A second vertical, convex lens, labeled "f2," is positioned a distance d to the right of the left lens, and is also centered upon the horizontal line. A second arrow, labeled "Final image," lies between the two lenses at a distance x from the left lens, originates from the horizontal line, and points downward.

(a) How far (in cm) to the left of the first lens should the object be positioned?

_______cm

(b) What is the overall magnification of the system?

________

(c) Is the final image upright or inverted?

________

Answer 1