# Chapter 3 Review_2_

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```					Chapter 11 Review
Mirrors & Lenses
Category: Reflection

What is an angle of incidence?

2
Category: Lenses

What is the difference in shape
between a convex and a
concave lens?

3
Category: Images

What is an optical device?
Give three examples.
Category: Mirrors

What is the principal axis
of a curved mirror?

5
Category: Mirrors

Describe the size, attitude,
location, and type of image you
get in a plane mirror

6
Category: Images

What is a virtual image?
An image that
cannot be placed on
a screen and can
only be seen by
looking at or through
an optical device
(light rays diverge
from the optical
device).                   7
Category: Mirrors

Why does an image appear
behind a plane mirror?
Rays reflecting off a
plane mirror diverge. It
you extend these
reflected rays back,
they would converge
behind the mirror.
8
Category: Reflection

If an incident ray is at an angle of 20
degrees from the surface of a mirror
(not from the normal), what will be
the angle of reflection?

If the incident ray is at an angle of
20 degrees from the mirror, then
the angle of incidence is 90 – 20 =
70 degrees, so the angle of
reflection is also 70 degrees.
9
Category: Lenses

In what situation would a light ray
passing through a lens not refract at
all?

10
Category: Mirrors

Describe the size, attitude, location,
and type of image obtained by
holding an object very far beyond the
focal point of a concave mirror.

11
Category: Mirrors
What type of mirror is a
cosmetic mirror and why does
a person have to be close to it
for it to be useful?
Category: Lenses

How is a convex lens similar to a
concave mirror?

13
Category: Reflection
Give two examples of ways to
diffuse light in a room so that it is
easier on the eyes.

14
Category: Mirrors
Describe the size, attitude, location,
and type of image obtained by
holding an object just beyond the
focal point of a concave mirror.

15
Category: Reflection

What is diffuse reflection?

16
Category: Refraction

Does a light ray speed up or slow
down as it passes from air to
water? Does it bend away from
or towards the normal?

17
Category: Mirrors
Why does the passenger side-view
mirror of a car read “Objects in
mirror are closer than they appear”?

18
Category: Mirrors

How would you describe the
reflected rays from a convex
mirror?

19
Category: Images

What is a real image?

20
Category: Mirrors

How would you describe the
reflected rays from a concave
mirror?

21
Category: Reflection

What is specular reflection?

22
Category: Refraction

What is refraction?

23
Category: Mirrors

What type of mirror is used in a
flashlight and why?

24
Category: Mirrors

In what situation would a
concave mirror produce an
upright, virtual image?

25
Category: Lenses

What is a lens?

26
Category: Reflection

What is the difference between an
incident ray and a reflected ray?

27
Category: Mirrors

What type of mirror is a
surveillance mirror? Why?

28
Category: Mirrors
Describe the size, attitude, location,
and type of image obtained by
holding an object in front of a
convex mirror.

29
Category: Lenses

How would you describe light
rays passing through a convex
lens?

30
Category: Refraction
Describe why the straw appears
bent in the glass of water.

31
Category: Mirrors
What is the difference in shape
between a concave and a
convex mirror?

32
Category: Lenses

Describe the size, attitude, and
type of image produced by a
concave lens.

33
Category: Reflection

Give two examples of
specular reflection.

34
Category: Lenses

What type of lens does a magnifying
glass use? Why must you hold the
object you are observing close to
the lens?

35
Category: Lenses

Name three devices that use
lenses.

36
Category: Mirrors

Describe the size, attitude, location,
and type of image obtained by
holding an object within the focal
point of a concave mirror.

37
Category: Mirrors
What is the focal length of
a curved mirror?

38
Category: Lenses

What happens to parallel light
rays that strike a concave lens?

39
Category: Mirrors

What is the focal point of a
concave mirror?

40
Category: Reflection

What are the two laws of
reflection?

41

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