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In: Physics

Two converging lenses having focal lengths of f1 = 12.5 cm and f2 = 19.5 cm...

Two converging lenses having focal lengths of f1 = 12.5 cm and f2 = 19.5 cm are placed a distance d = 48.5 cm apart as shown in the figure below. The image due to light passing through both lenses is to be located between the lenses at the position x = 32.5 cm indicated.

Four objects are arranged along a horizontal line. From left to right, they are:

  • An arrow, labeled "Object", begins on the line and points upward;
  • A converging lens, labeled f1, is centered on the horizontal line so that the line passes through the widest part of the lens;
  • A point labeled "Final image position";
  • A converging lens, labeled f2, is centered on the horizontal line so that the line passes through the widest part of the lens.

The horizontal distance between the object and lens f1 is p. The horizontal distance between lens f1 and the final image position is x. The horizontal distance between lens f1 and lens f2 is d.

(a) At what value of p should the object be positioned to the left of the first lens?
cm

(b) What is the magnification of the final image?

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