Jim Guinn’s PHYS2212 Assignment #20 Solutions
For problems 16, draw a ray tracing diagram, to scale, to find the image. Then, using only
your diagram
, answer the questions, is the image real or virtual, upright or inverted, and
estimate its magnification?
For problems 13, consider a concave mirror with a radius of curvature of 60.0cm.
1. Consider an object that is 5.00cm tall and 75.0cm from the mirror.
The image is real, inverted, and looks about 1/2 the size of the object.
2. Consider an object that is 5.00cm tall and 45.0cm from the mirror.
The image is real, inverted, and looks about 2x the size of the object.
3. Consider an object that is 5.00cm tall and 15.0cm from the mirror.
The image is virtual, upright, and looks
about 2x the size of the object.
For problems 46, consider a convex mirror with a radius of curvature of 60.0cm.
4. Consider an object that is 5.00cm tall and 75.0cm from the mirror.
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The image is virtual, upright, and
looks about 1/3 the size of the object.
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 Spring '11
 JimGuinn
 DI, Radius of curvature

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