Glencoe Physical Science

Chapter 14: Mirrors and Lenses

Section 2 Self-Check Quiz-Eng.

1
What is the difference between a lens and a mirror?
A)Lenses reflect light, and light passes through mirrors.
B)Mirrors reflect light, and light passes through lenses.
C)A lens has no focal point.
D)A mirror has no optical axis.
2
A __________ lens is thicker in the middle than at the edges.
A)concave
B)convex
C)plane
D)spherical
3
A __________ lens is thinner in the middle and thicker at the edges.
A)concave
B)convex
C)plane
D)spherical
4
The transparent covering on the human eyeball is called the __________.
A)cornea
B)retina
C)lens
D)iris
5
The __________ is the inner lining of your eye that has cells for converting light into electrical signals.
A)cornea
B)sclera
C)optic nerve
D)retina
6
Which of the following conditions occurs when the cornea is curved unevenly?
A)nearsightedness
B)farsightedness
C)blindness
D)astigmatism
7
Which of the following concave lenses forms a virtual image?
A)object within one focal length
B)object between one and two focal lengths
C)object between two and three focal lengths
D)object beyond three focal lengths
8
What structure carries electrical signals from the retina to the brain to be interpreted?
A)optic nerve
B)cornea
C)sclera
D)focal point
9
What type of image is formed on the retina?
A)inverted
B)backwards
C)upright virtual
D)upright real
10
What kind of lens is helpful to nearsighted people?
A)convex
B)flat
C)concave
D)plane
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