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Mirrors — Quiz Answers

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1
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Which best compares convex and concave mirrors?

A
Convex mirrors produce only real images, and concave mirrors produce real and virtual images.
B
Concave mirrors produce only real images, and convex mirrors produce real and virtual images.
C
Concave mirrors produce only virtual images, and convex mirrors produce real and virtual images.
D
Convex mirrors produce only virtual images, and concave mirrors produce real and virtual images.
2
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A 12-inch object is placed 30 inches in front of a plane mirror. A ray of light from the object strikes the mirror at a 45-degree angle. How tall is the image produced by the mirror?

A
45 inches
B
24 inches
C
30 inches
D
12 inches
3

How is an image produced by a plane mirror different than an image produced by a convex mirror?

A
It is the same size as the object.
B
It is upright.
C
It is smaller than the object.
D
It is inverted.
4

A ray diagram shows that an object is placed in front of a plane mirror. What are the characteristics of the image produced by the object?

A
upright, same size as object, virtual
B
inverted, same size as object, real
C
inverted, larger than object, real
D
upright, smaller than object, virtual
5

What is the mirror formula for curved mirrors?

A
1 over f is equal to the fraction with numerator 1 and denominator d sub o minus the fraction with numerator 1 and denominator d sub i
B
1 over f is equal to the fraction with numerator 1 and denominator d sub o plus the fraction with numerator 1 and denominator d sub i
C
1 over f plus the fraction with numerator 1 and denominator d sub o is equal to the fraction with numerator 1 and denominator d sub i
D
1 over f is equal to open paren the fraction with numerator 1 and denominator d sub o close paren times open paren the fraction with numerator 1 and denominator d sub i close paren
6

Barbara places an object in front of a mirror. The mirror produces an image that is inverted, real, and smaller than the object. Which kind(s) of mirror could Barbara be using?

A
convex or plane, because both types of mirrors produce an image that is smaller than the object
B
convex, because concave and plane mirrors produce only virtual images
C
concave, because plane and convex mirrors produce only upright virtual images
D
concave or convex, because both types of mirrors produce images that are inverted and real
7

What is the magnification formula?

A
negative the fraction with numerator h sub i and denominator h sub o is equal to the fraction with numerator d sub o and denominator d sub i
B
the fraction with numerator h sub o and denominator h sub i is equal to negative the fraction with numerator d sub i and denominator d sub o
C
negative the fraction with numerator h sub i and denominator h sub o minus the fraction with numerator d sub i and denominator d sub o is equal to 1
D
the fraction with numerator h sub i and denominator h sub o is equal to negative the fraction with numerator d sub i and denominator d sub o
8

Leo places a plant in front of the center of curvature of a concave mirror. Which characteristics will the image of the plant have? Choose three correct answers.

A
real
B
upright
C
inverted
D
larger
E
virtual
F
same size
G
smaller
9

Jessie draws a ray diagram to show how an image of a candle is produced by a concave mirror when the candle is placed in front of the center of curvature. Jessie thinks the image should be virtual and behind the mirror. Which best describes Jessie’s error?

A
The object should be at the center of the curvature.
B
The object should be between the focal point and vertex.
C
The object should be between the center and vertex.
D
The object should be placed anywhere on the principal axis.
10

A ray diagram shows that an object is placed between the focal point and the vertex of a convex mirror. What are the characteristics of the image produced by the object?

A
upright, smaller than object, virtual
B
inverted, smaller than object, real
C
inverted, larger than object, real
D
upright, larger than object, virtual

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