Review for test:
Law of reflection – angle in = angle out
Refraction: what is
it, why it is
Index of refraction:
n = c/v
Snell’s law: n1
sin(theta 1) = n2 sin(theta 2)
Other equations: v =
f l
Also worth remembering:
f does NOT change during refraction, but v and l will
Remember: normal line
(perpendicular to surface of optic)
Lenses and mirrors:
convex lens and concave mirror (both have +f); concave lens and convex
mirror (-f)
Lens equation: 1/f =
1/di + 1/do
Magnification: mag =
-di/do. Also, hi/ho (height of image
divided by height of object)
-mag = upside-down image; +mag = right-side up image
Absolute value of mag tells you whether image is larger
([mag] > 1) or smaller than object ([mag] < 1)
Real (+di) vs. virtual image (-di)
Critical angle and total internal reflection: sin(critical angle) = 1/n
Questions to expect:
1.
Snell’s law (like quiz)
2.
Lens (like HW)
3.
Miscellaneous:
you’ll choose 1 or 3 (or so)
a.
Essay covering some abstract situation or problem
b.
More mathematical/theoretical question
c.
Demonstration?
d.
Practical (where you have to DO something or
look at something)
e.
??? (mwa ha ha ha ha…..maniacal laugh)
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