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Quiz - Vision & Lenses

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.

The hole in the eye through which light enters.

a)

cornea

b)

pupil

c)

lens

d)

retina

2.

The nerve that carries the nerve impulses from the eye to the brain.

a)

nerve impulse

b)

optic nerve

c)

auditory nerve

d)

motor nerve

3.

Which part of the eye has a function that opens and closes to change the size of the pupil?

a)

lens

b)

iris

c)

retina

d)

cornea

4.

Having a longer eyeball results in __________________________, a condition which causes the light to focus in front of the retina.

a)

astigmatism

b)

glaucoma

c)

farsightedness

d)

nearsightedness

5.

Which part of the eye is labeled with the letter "A"?

a)

cornea

b)

lens

c)

retina

d)

optic nerve

6.

Which part of the eye is labeled with the letter "E"?

a)

cornea

b)

pupil

c)

iris

d)

lens

7.

Which part of the eye is labeled with the letter "C"?

a)

retina

b)

optic nerve

c)

vitreous fluid

d)

iris

8.

True/False: The two types of photoreceptors in the retina are rods and cones

a)

True

b)

False

9.
What does the word "converging" mean?
a)
to separate
b)
to come together
c)
parallel 
d)
perpendicular
10.
What does the word "diverging" mean?
a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
11.
Is a convex lens thicker or thinner in the middle?
a)
Thicker 
b)
Thinner 
12.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
13.
What type of image is formed when rays of light actually intersect?
a)
real
b)
virtual
c)
projected
d)
curved
14.
The pictures shows what a student observed when he looked through a hand lens at a penny.
What happens to light passing through a hand lens that makes the image of the penny appear larger? The light is-
a)
absorbed
b)
reflected
c)
refracted
d)
stopped
15.
An image that you can see , but does not really exist is called which of the following?
a)
Real Image
b)
Fake Image
c)
Virtual Image
d)
Digital Image
16.
_____ is a lens that is thicker in the middle and makes an object appear bigger.
a)
prism
b)
convex lens
c)
concave lens
d)
mirror
17.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
18.
Refraction occurs when _____________
a)
the wave's speed changes by entering a new medium
b)
a wave bounces off of a boundary
c)
waves parts meet each other
d)
waves bend around a barrier
19.

What is the ratio of the speed of light in a vacuum over the speed of light in a material?

a)

index of refraction

b)

critical angle

c)

total internal reflection

d)

aperture

20.

Which of the following does fiber optics technology use?

a)

index of refraction

b)

critical angle

c)

total internal reflection

d)

aperture