Refraction and Lenses Answers

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1
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Which describes an image that can be produced by a concave lens?

A
The image is real and smaller than the object.
B
The image is virtual and larger than the object.
C
The image is virtual and smaller than the object.
D
The image is real and larger than the object.
2
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When parallel light rays exit a concave lens, the light rays

A
diverge.
B
converge.
C
come together.
D
remain parallel.
3

Which kind of image can never be projected and forms where light rays appear to originate?

A
virtual
B
real
C
inverted
D
enlarged
4

The diagram shows an image produced by a lens.At which point does the image appear?

Question illustration
A
W
B
X
C
Y
D
Z
5

Different kinds of lenses are used in eyeglasses to help people with eye conditions. Farsightedness is an eye condition in which distant objects appear clear but close objects appear blurry. Nearsightedness is an eye condition in which close objects appear clear but distant objects appear blurry.

A
Concave lenses would help someone who is nearsighted because the lenses make objects look smaller and closer.
B
Concave lenses would help someone who is farsighted because the lenses make objects look smaller and closer.
C
Convex lenses would help someone who is nearsighted because the lenses can make objects look smaller and closer.
D
Convex lenses would help someone who is nearsighted because the lenses can make objects look larger and farther away.
6

Samantha is viewing a real image formed by a lens of a diamond ring. Which must be true about the image?

A
It could not be captured on film.
B
It is larger than the actual ring.
C
It was formed by a concave lens.
D
It is upside down.
7

The diagram shows a clear plastic lens.A student shines a flashlight on the lens from the left side. Which best describes what happens when light rays exit the lens?

Question illustration
A
They are all refracted away from a central axis.
B
They are all refracted toward a central axis.
C
They exit parallel to the path in which they entered.
D
They exit at a slower speed from which they entered.
8

Akio draws the ray diagram shown.Which best explains how to correct Akio’s mistake?

Question illustration
A
Change the lens so it appears convex instead of concave.
B
Move the small car so it appears on the left side of the lens.
C
Make the small car much larger than the other car.
D
Draw the top ray so that it passes through the focal point on the right.
9

Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, speeds up, and bends toward the normal.

A
Light travels through air and water in angled, scattered paths.
B
Light does not change direction when it moves from air into water.
C
Light slows down when it moves from air into water.
D
Light bends away from the normal when it moves from air into water.
10

Danny drew a ray diagram to show the image of a plastic bottle produced by a concave lens. Which describes how the bottle should appear in the diagram?

A
The image of the bottle should appear larger than the actual bottle.
B
The image of the bottle should be upside down compared to the actual bottle.
C
The actual bottle should appear larger than the image of the bottle.
D
The actual bottle should be upside down compared to the image of the bottle.

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