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Quiz-lenses

Total questions: 20

Worksheet time: 42mins

Name
Class
Date
1.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
2.
What type of image is formed when rays of light actually intersect?
a)
real
b)
virtual
c)
projected
d)
curved
3.
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
4.
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
5.
_____ 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
6.
When an object is placed on the focal point in front of a convex lens, the image produced is ___.
a)
real, reduced, and inverted
b)
real, enlarged, and inverted
c)
real, true, and inverted
d)
There is no image
7.
When an object is placed between the focal point and the convex lens, the image produced is ___.
a)
real, reduced, and inverted
b)
real, enlarged, and inverted
c)
virtual, enlarged, and upright
d)
virtual, reduced, and upright
8.
What does the word "diverging" mean?
a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
9.
This image is.....
a)
inverted and smaller
b)
inverted and larger
c)
not inverted and smaller
d)
not inverted and larger
10.
This image is...
a)
Inverted and smaller
b)
inverted and bigger
c)
not inverted and smaller
d)
not inverted and bigger
11.
If an object's distance from a convex lens were increased, the image would become which of the following?
a)
Larger and virtual
b)
Larger, only
c)
Smaller, only
d)
Smaller and virtual
12.

Which type of lens separates light rays from a single point as they exit the lens?

a)

prism

b)

converging

c)

diverging

d)

polarized

13.

What is the distance between the the center of the lens and the focal points called?

a)

principal axis

b)

focal length

c)

focal distance

d)

lens radial line

14.

What is the correct description of the image?

a)

Virtual, magnified 3x, inverted

b)

real, magnified 3x, inverted

c)

real, magnigied 3x, right-side up

d)

Virtual, magnified 3x, right-side up

15.

True or False: All real images are are inverted (upside down)?

a)

True

b)

False

16.

Where is the location of the object on a ray diagram if the lens is used as a magnifying glass?

a)

outside of the focal point

b)

on the focal point

c)

between the focal point and the center of the lens

17.

What kind of lens is this?

a)

concave

b)

an eyepiece

c)

convex

d)

a cornea

18.

Which of the following is NOT a property of a converging lens?

a)

can be used as a magnifying glass

b)

rays of light refract to a single point after exiting this lens

c)

only forms virtual images

d)

thicker in the middle

19.

What do we use ray diagrams to determine?

a)

the location of the object

b)

the focal length

c)

the location of the image

d)

the type of lens being used

20.

How many rays MUST you use in a ray diagram?

a)

3

b)

4

c)

2

d)

1

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