Question

a microscope has a converging lens (the eyepiece) with a focal length of f1=1.73cm mounted on one end of a tube of adjustable length. at the other end is another converging lens (the objective) that has a focal length of f2=29.04 cm. when you place a small flea you want to examine at a distance of s1=3.36 cm from the objective . find the overall length of the microscope needed to view the sample (the flea) in focus with a completely relaxed eye? hint- a normal relaxed eye will expect to find an image at infinity . the length l of the microscope here is the distance between the eyepiece and the objective lens as shown in the fingure.

express your answer in cm and to two decimal places. show work for full credit

feyepiece lens at l microscope length objective lens fo co Express your answer in cm and to two decim

Answer 1

answer = 32.61 cm

lens bonisn 1 fi equation 1 t 1 doi dir 1 ㅗ 3.36 1.73 -) die 3.566 cm = .: Length of microscope=diitfa + F3.566 +29.04 = [32.606cm