

Henderson's Regular
Physics Quizzes
(19992000 School Year)
Suggestions for this week's quiz
(Unit 14 Quiz):
This week's quiz on Unit 14 material is tentatively
scheduled for Thursday, May 11. The quiz will be a onepage
quiz, covering both sides of a single sheet of paper. The
equation for Snell's law of refraction will be given; you
might be given the critical angle equation. Students
will need a protractor and ruler. Other than a calculator,
no other helps will be provided nor allowed. Roughly
onehalf of the quiz will pertain to curved mirror
reflection and onehalf will pertain to refraction of light.
Students can expect the following concepts, skills, and
problemtypes to be assessed on this quiz:
 Use information about the two media on each side of
the boundary (e.g., information about the optical
density of, the index of refraction of or the speed of
light in the two medium) to predict
whether a light ray will bend towards or away from the
normal at the boundary of the two medium; to
construct a refracted ray to express this
understanding.
 Use Snell's
law to determine the angle
of refraction at a boundary between two medium (if
given the indices of refraction and the angle of
incidence); similarly use Snell's law to solve for the
fourth parameter if given values of the other three
parameters in the equation; interpret
the results of such calculations to draw the refracted
ray at the appropriate angle.
 Use Snell's Law and the path of light through a
material to
determine the index of refraction of an unknown
material.
 Define total
internal reflection; to decribe the conditions under
which it occurs and to use the phenomenon to explain
several applications of TIR (artheroscopic surgery,
communications, sparkling of diamonds, and periscopes and
binoculars).
 Define the critical
angle and to calculate the critical angle for any
combination of media; to interpret critical angle
calculations in order to explain what would happen to
light when incident towards a boundary at a given angle
(greater than, equal to, or less than the critical
angle).
Sample Quizzes (Unit
14):
There are a few sample
quizzes currently available on the topic of refraction and
total internal reflection:
Quiz#1 (1994)
Quiz#2 (1996)
(disregard Q's #16, and 8; reflection questions)
Quiz#3 (1997)
 Sample
Quizzes  Studying
Suggestions  About the Quiz
Room  Archive of 1997
Studying Suggestions  Archive
of 1998 Studying Suggestions  Archive
of 1999 Studying Suggestions  Other
Glenbrook South Physics Resources 
© Tom
Henderson, 19962000
Glenbrook
South High School.
Last updated on 5/10/00.
