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Phys 4, Section 2
Quiz 10
Apr 11, 2002
1. The units of the index of refraction n are
A) m/s B) N
C) J D) dimensionless
2. The magnitude of n is
A) greater than or equal to 1
B) less than or equal to 1
C) between zero and one, inclusive D) could be any value
3. The larger the n value of a medium, the faster light travels in
that medium.
A) true
B) false
4. For light incident on a plane interface between two media, the
transmission
angle will be larger than the incident angle if
A) n1 > n2
B) n1 < n2
C)
angle independent of n
5. Which of the following spherical mirror surfaces has a positive R
for light
traveling left to right?
A) convex
B) concave
C) both
D) neither
6. To an observer above a pond and looking down, a fish appears
A) closer to surface than it really is
B) deeper from surface than it is
C) at real depth from surface
7. A horizontal transparent glass rod with a convex end cap will have (for
external
light
approaching the convex end)
A) positive radius of curvature
B) negative radius of curvature
C) indeterminate sign
8. A negative value for s’ indicates that the image is
A) real B) virtual
C) minified
D) magnified
9. For a small girl to see her full image in a plane mirror, the mirror
should be at
least
A) half girl’s size mounted at head level
B) half girl’s size resting on
floor
C) same size as girl and resting on floor
D) any size if properly mounted
10. For a plane mirror, the radius of curvature is
A) 0 B) infinite
C) +1
D) -1
Answers: 1-d, 2-a, 3-b, 4-a, 5-b, 6-a, 7-a, 8-b, 9-a, 10-b
Last modified on April 11, 2002
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