1. T/F: Today's lab will explore the subject of physical optics.
Answer:
False.
2. Which of the following will we be studying in today's lab?
Answer:
All except D.
Snell's law.
The index of refraction of certain objects.
The mirror equation.
Interference and Diffraction.
3. Suppose the index of refraction of water is 1.33. What is the
speed of light in water? (Note: you may assume that c =
3x108m/s)
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Answer:
2.26e8 m/s
4. Please describe total internal reflection.
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Answer:
Another good defn: The reflection that occurs when light, in a higher
refractive-index medium, strikes an interface, with a medium with a
lower refractive index, at an angle of incidence (with respect to the
normal) greater than the critical angle.
5. Looking at the 1st frame: suppose the spade that
Calvin's mom is looking at is 30 inches from her sunglasses. If the
light from the spade enters the sunglasses and then forms an image on
her retina (located 2 inches behind the center of the lens), what
is the focal length of the lens of the sunglasses.
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