Module 4
Case Assignment
Light and
Optics
Turn in your answers to the
following problems below. As always, make sure to show all of your work.
- Light is incident at angle
A from a media with n = 1.5 to one with n = 2.0 as shown in the figure. What
is the minimum value for A so that there is total internal reflection at point
P, which is at the interface between the n = 2 and n = 1 materials? ?
A
n=1.5
n=2
P
n=1
- An object of height 5 cm
is placed 30 cm in front of spherical concave mirror. If the image is real and
10 cm high, what is the radius of curvature of the mirror?
- Two lenses are placed on
the x-axis. The first lens is a diverging lens with focal length 4cm placed at
x = -2cm. The second lens is a converging lens with focal length 7cm placed at
x = 8cm. If an object is placed at x = -18cm, what is the position of the
image on the x-axis? (Find the answer to the nearest centimeter)
- In the above problem,
which of the following characterizes the final image when compared to the
original object?
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