1. A laser beam is incident from air at an angle of 30.0◦ to the normal onto a liquid solution. The beam is refracted at

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1. A laser beam is incident from air at an angle of 30.0◦ to the
normal onto a liquid solution. The beam is refracted at an angle of
19.24◦ to the normal in the liquid.
(a) What is the index of refraction of the solution? Suppose the
light is red, with wavelength 632.8 nm in a vacuum. Find its
(b) wavelength,
(c) frequency, and
(d) speed in the solution.
2. A spherical mirror is to be used to form an image five times
as tall as an object on a screen positioned 5.0 m from the
mirror.
(a) Is this image real or virtual? Why?
(b) Describe the type of mirror required.
(c) Where should the mirror be positioned relative to the
object?
(d) Calculate the focal length of the mirror.
3. A converging lens of focal length 5 cm has an object placed 3
cm from it.
(a) Draw a ray diagram of the system and use 2 rays to locate
the position of the image.
(b) Use the lens equation to calculate the position of the
image.
(c) Describe the image properties.
4. A diverging lens has focal length f = −10 cm. An object is
placed 12 cm from the lens.
a) Draw a ray diagram of the system and use 2 rays to locate the
position of the image.
b) Use the lens equation to calculate the position of the
image.
c) Describe the image properties.
5. A plastic light pipe has an index of refraction of 1.53. For
total internal reflection, what is the minimum angle of incidence
if the pipe is in
a) air?
b) water? (Refractive index of air = 1.00 and of water =
1.33)