STUDY GUIDE 4, SELF TEST 5

© Department of Physics, University of Guelph.

Select the question number or part you wish.

1. A microscope has an objective lens of focal length 16 mm and an eyepiece lens of focal length 2.5 cm. The lenses are separated by 22.1 cm. The final image is at infinity.

(a) What should be the distance from the
object viewed to the objective lens?

(b) What lateral magnification is produced by
the objective lens?

(c) What is the overall magnification?

2. A telescope has an overall magnification of magnitude 35X. The objective lens has a focal length of 100 cm.

(a) What is the focal length of the eyepiece?

(b) By how much are the lenses separated?