Name: Lab Partners:
Date:
Homework:
Lenses and Images
(Due at the beginning of lab)
1. What is a virtual image? How is it different than a real image?
The next several questions refer to the lens system shown in the figure below. Initially,
the object is at position A, and the image is formed at position.
(a) To what position (B,C,D, on one of the focal points, or infinitely far away) must
the object be moved in order to cause the change in the image described in each of
the following questions. Explain why moving the object to the position you identify
brings about the required change in the image.
f f
Object
Image
#1#2 #3
AB C D
(b) The image moves closer to the lens, to position #2.
(c) The images moves farther from the lens, to position #3
(d) The image becomes larger.
PHYS-204: Physics I I Laboratory i
