1. As the angle of incidence is increased
for a ray incident on a reflecting surface, the angle between the
incident and reflected rays ultimately approaches what
b. 45 degrees
c. 90 degrees
d. 180 degrees
2. If you stand three feet in front of a
plane mirror, how far away would you see yourself in the mirror?
a. 1.5 ft
b. 3.0 ft
c. 6.0 ft
d. 12.0 ft
3. A concave mirror with a focal length
of 10 cm creates a real image 30 cm away on its principal axis;
the corresponding object is located how far from the mirror?
a. 20.0 cm
b. 15.0 cm
c. 7.5 cm
d. d. 5.0 cm
4. A concave mirror forms a real image at
25 cm from the mirror surface along the principal axis. If the
corresponding object is at a 10 cm distance, what is the mirror's
a. 1.4 cm
b. 16.7 cm
c. 12.4 cm
d. 7.1 cm
5. If a virtual image is formed along the
principal axis 10 cm from a concave mirror with the focal length
15 cm, what is the object distance from the mirror?
a. 30.0 cm
b. 10.0 cm
d. 6.0 cm
6. If a virtual image is formed 10 cm
along the principal axis from a convex mirror of focal length -15
cm, what is the object distance from the mirror?
c. 6.0 cm
d. 3.0 cm
7. If a man's face is 30 cm in front of a
concave shaving mirror creating an upright image 1.5 times as
large as the object, what is the mirror's focal length?
a. 12.0 cm
b. 20.0 cm
c. 70.0 cm
d. 90.0 cm
8. Which of the following best describes
the image of a plane mirror?
9. Which of the following best describes
the image of a concave mirror when the object is located somewhere
between the focal point (F) and the center of curvature (C) of the
a. virtual, upright and
b. real, inverted and
c. virtual, upright and
d. real, inverted and
10. Which of the following best describes
the image of a concave mirror when the object is at a distance
further than the center of curvature (C) of the mirror?
a. virtual, erect and
11. Which of the following best describes
the image of a concave mirror when the object distance from the
mirror is less than the focal point (F) distance?
12. Which of the following best describes
the image of a convex mirror when the object distance from the
mirror is less than the absolute value of the focal point (F)
13. Use of a parabolic mirror, instead of
one made of a circular arc surface, can be used to reduce the
occurrence of which of the following effects?
d. light scattering
14. When the image of an object is seen
in a plane mirror, the image is
a. real and upright.
b. real and inverted.
c. virtual and
d. virtual and
15. When the image of an object is seen
in a plane mirror, the distance from the mirror to the image
16. If a man wishes to use a plane mirror
on a wall to view both his head and his feet as he stands in front
of the mirror, the required length of the mirror
17. When the image of an object is seen
in a concave mirror the image will
a. always be real.
b. always be virtual.
c. be either real or
d. will always be magnified.
18. When the image of an object is seen
in a convex mirror the image will
c. may be either real or
19. Rays of light traveling parallel to
the principal axis of a concave mirror will come together
a. at the center of curvature.
b. at the focal point.
c. at infinity.
d. at a point half way to the
20. Distinguish between diffuse and
regular (specular) reflection in terms of both cause and
21. Consider the following
object in front of a plane mirror. Construct a ray
diagram to show how light tavels from the object (arrow)
to the mirror and ultimately to the eye; then indicate
the portion of the mirror needed in order for the eye to
view the image.
22. Construct ray diagrams to show where
the images of the following objects are located. Dray in the
complete image and describe its characteristics (real or virtual,
enlarged or reduced in size, inverted or upright). (NOTE: review
the ray diagrams for all possible objects locations for each
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This page last updated on May 26, 2000.