PHYS 1112
Chapter 23 Problems
Chapter Objectives
- Calculate the image distance, magnification, focal length and
determine real or virtual imagery for reflections from concave and
convex mirrors.
- Calculate the image distance, magnification, focal length and
determine real or
virtual imagery for systems of thin lenses.
- Describe spherical and chromatic aberration as it applies to
images.
- Describe and use the lensmaker equation.
Conceptual Questions
- Why do things in the right rearview mirror appear further away
than they are?
- What type of mirror is used at a fun house to make you appear
thinner? To make you look shorter?
- Why do people consider a reflecting telescope to be superior to a
refracting telescope?
- When people first begin to wear glasses, they find that the world
looks a little more colorful than when they did not wear glasses. This
is sometimes attributed to things being in better
focus. Can you think of a better reason?
Selected Problems
- The real image height of a concave mirror is observed to be four
times greater than the object height when the object is 30.0 cm in
front of a mirror. What is the radius of curvature of
the mirror?
- A goldfish is swimming in water inside a spherical plastic bowl
of index of refraction 1.33. If the goldfish is 10.0 cm from the wall
of the 15.0-cm-radius bowl, where does the goldfish appear to an
observer outside the bowl?
- A converging lens has a focal length of 20.0 cm. Locate the
images for object distances of (a) 40.0 cm, (b) 20.0 cm, and (c) 10.0
cm. For each case, state whether the image is real or virtual and erect
or inverted, and find the magnification.
Solutions
If you find an error in these, or just have a comment, send an
e-mail
message to jpratte@kennesaw.edu