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Mirrors, Lenses And The Eye
Test Description: S&L 4.1 and 4.2
Instructions: Answer all questions to get your test result.
1) A mirror that has a flat surface
A
virtual
B
concave
C
plane
D
convex
2) A transparent object that forms an image by refracting light is a
A
lens
B
concave mirror
C
convex mirror
D
window
3) Where are the rods and cones located?
A
in the pupil
B
in the iris
C
in the retina
D
in the cornea
4) What is the membrane that protects the eye and through which light is refracted?
A
cornea
B
iris
C
pupil
D
retina
5) Muscles surrounding the lens of the eye
A
make the lens thicker or thinner so it can focus
B
keep the lens from changing so it can focus
C
make the lens thinner so it can focus
D
make the lens thicker so it can focus
6) Surgical correction of nearsightedness or farsightedness involves using a laser to reshape a patient's
A
rods and cones
B
cornea
C
retina
D
pupil
7) What causes color deficiency?
A
the irises change color
B
one or more types of rods respond to the wrong color
C
one or more types of cones respond to the wrong color
D
the irises respond to the wrong color
8) What part of the eye detects very dim light?
A
cornea
B
lens
C
cones
D
rods
9) A person who is nearsighted
A
has eyes that are too short, and things nearby look blurry
B
has eyes that are too long, and things far away look blurry
C
has eyes that are too short, and things far away look blurry
D
has eyes that are too long, and things nearby look blurry
10) What is a transparent object that is thinner in the middle than at the edges?
A
convex lens
B
convex mirror
C
concave lens
D
concave mirror
*select an answer for all questions
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