Physics Principles and Problems 2009

Chapter 17: Reflection and Mirrors

Standardized Test Practice

1
If a light ray reflects off a plane mirror at an angle of 30° to the normal, what is the angle of incidence of the ray?
A)150°
B)60°
C)30°
D)15°
2
What determines whether a surface produces a specular reflection or a diffuse reflection?
A)the wavelength of the light alone
B)the index of refraction of the surface
C)how smooth the surface is relative to the wavelength of the light
D)whether the surface is convex or concave
3
Which statement is true about the image produced by a plane mirror?
A)It appears to be located on the same side of the mirror as the object.
B)It appears to be larger than the object.
C)It appears to be inverted relative to the object.
D)It appears to have reversed front and back, relative to the object.
4
The diagram shows rays of light reflected from a convex mirror. Which describes the image size and orientation for this mirror?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617925/bh.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (5.0K)</a>
  Need a Hint?
A)enlarged, inverted
B)enlarge, upright
C)reduced, inverted
D)reduced, upright
5
What is the value of the magnification, m, for this mirror?

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  Need a Hint?
A)m =1
B)m < 0
C)m > 1
D)0 < m < 1
6
The diagram below represents a concave mirror with an object located between the focal point, F, and the surface of the mirror. What type of image is produced when the object is in this position?

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  Need a Hint?
A)inverted, enlarged, and real
B)upright, enlarged, and virtual
C)inverted, reduced, and virtual
D)upright, reduced, and real
7
Which of the following explains the law of reflection?
A)the specular model of light
B)the diffuse model of light
C)the wave model of light
D)the particle model of light
8
What is the focal length of a concave mirror in which the image is located 10.0 cm in front of the mirror when the object is located 15.0 cm in front of the mirror?
A)6.00 cm
B)12.0 cm
C)15.0 cm
D)30.0 cm
9
If a concave mirror has a focal length of 8.00 cm, how far from the mirror is the image of an object that is located 40.0 cm in front of the mirror?
A)10.0 cm
B)6.67 cm
C)5.00 cm
D)1.50 cm
10
A candle is 30 cm from a spherical mirror. The mirror forms an image 15 cm from the mirror on the same side as the object. What is the magnification of the mirror?
A)2
B)0.5
C)-2
D)-0.5
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