Now remove the two lenses at +20.0 cm and 20.0 cm and replace them with a single lens of focal length f3 at z = 0, We want to choose this new lens so that it produces an image at the same location as before A compound lens system consists of two converging lenses, one at z20.0 cm with focal length f1 +10.0 cm, and the other at +20.0 cm with focal length f2 +8.00 cm. (Figure 1)An object 1.00 centimeter tall is placed at z =-50.0 cm Part D What is the focal length of the new lens at the origin? Express your answer in centimeters, to three significant figures or as a fraction. View Available Hint(s) Figure 1 of 1> cm fi /2 Submit Part E This question will be shown after you complete previous question(s). Solution D) The object is 50 cm from the new lens and has an image distance of 31.76 cm. This gives an answer of 19.42 cm. 19.4 cm (3 sf) .

1. Now remove the two lenses at +20.0 cm and 20.0 cm and replace them with a single lens of focal
length f3 at z = 0, We want to choose this new lens so that it produces an image at the same
location as before A compound lens system consists of two converging lenses, one at z20.0 cm
with focal length f1 +10.0 cm, and the other at +20.0 cm with focal length f2 +8.00 cm. (Figure
1)An object 1.00 centimeter tall is placed at z =-50.0 cm Part D What is the focal length of the
new lens at the origin? Express your answer in centimeters, to three significant figures or as a
fraction. View Available Hint(s) Figure 1 of 1> cm fi /2 Submit Part E This question will be
shown after you complete previous question(s).
Solution
D)
The object is 50 cm from the new lens and has an image distance of 31.76 cm. This gives an
answer of 19.42 cm.
19.4 cm (3 sf)