Come in on Monday prepared to ask questions and take the test. The 14+15 Review sheet is due before the test as usual. Here are numeric answers for the test:
1. f = 28 cm, M = -.48, small, real, inverted
2. q = 11.3 cm (use substitution to get rid of one of the variables, p or q)
3. concave mirror, M = - 20.0, larger, real, inverted
4. q = 170 cm, M = -2.7, h' = 22 cm
5. f = 200. cm, M = 1.25, larger, upright, virtual
6. 23 degrees
7. critical angle is 37 degrees, so refracted
(p.s. For students in 4th period, the answer to #20 on the 14+15 problems is 48 cm. We will go over this on Monday 4/30).
Make sure that you know how to use ray diagrams to locate an image. You will be required to do one, although you can choose a lens problem or a mirror problem. Make sure that you can show the refraction of light through a substance.
Enjoy your week-end and start thinking about that Astronomy Project!!
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