AnswersAG Q4 Science 8 25-26 ELuxReflection and Mirrors

Reflection and Mirrors Answers

14 verified answers2 views
6

plane✔ concaveconvex

A
plane
B
concave
C
convex
7

Which of these diagrams is a convex mirror?

A
[Image: A vertical rectangular box with a left side that b...]
B
[Image: A vertical rectangular box....]
C
[Image: A vertical rectangular box with a left side that b...]
8

Stefan is writing a report about the law of reflection. In his report, he says that the angle of incidence is the angle between the surface of the mirror and the incoming ray. Do you agree with him? Why or why not?

Answer:

I disagree with Stefan. According to the law of reflection, the angle of incidence is defined as the angle between the incoming (incident) ray and the normal line, not the surface of the mirror. The normal is an imaginary line that is drawn perpendicular to the mirror's surface at the point of reflection.

9

Which are uses of convex mirrors? Check all that apply.

A
magnifying mirrors for putting on makeup
B
side-view mirrors on vehicles
C
hallway safety mirrors
D
focusing automobile headlights
E
lenses in sunglasses
10

The word “virtual” refers to something that exists in effect but not in actual fact. How does this definition relate to the virtual image you see of yourself in a plane mirror?

Answer:

A virtual image in a plane mirror appears to be located behind the mirror surface where light rays seem to originate. However, because light cannot actually pass through the mirror to that location, no physical image exists there. This relates to the definition because the image exists in effect (you can see it), but not in actual fact (there is no physical light focusing at that spot).

11

✔ concaveplaneconvex

A
concave
B
plane
C
convex
12

largersmaller✔ same size

A
larger
B
smaller
C
same size
13

Sample Response: I disagree with him because the angle of incidence is the angle between the incoming ray and the normal. The normal is perpendicular to the surface of the mirror. What did you include in your response? Check all that applyThe angle of incidence is the angle between the incoming ray and the normal.The normal is an imaginary line perpendicular to the surface of the mirror.

A
The angle of incidence is the angle between the incoming ray and the normal.
B
The normal is an imaginary line perpendicular to the surface of the mirror.
14

What did you include in your response? Check all that apply.

A
The image appears to be behind the mirror.
B
If someone looks behind the mirror, there is no image there.

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