This document discusses reflection and images formed by plane mirrors. It begins with questions about light reflection and properties of images in mirrors. Plane mirrors form virtual, upright images that are the same size as the object and located behind the mirror. The distance from the mirror to the image is equal to the distance from the mirror to the object. Later sections discuss the law of reflection, applications of reflection like ambulance text, and assessing learning with additional questions.

2. TRY THIS!
Task: Think and Pick
Directions: Read and analyze each statement
carefully and choose the letter of the
correct answer.
1. When light hits a smooth surface, it is
_______________.
A. bent around corners
B. polarized
C. reflected
D. refracted

3. 2. The image in a plane mirror is
always
A. erect but reversed
B. erect but not reversed
C. inverted but reversed
D. inverted but not reversed

4. 3. What kind of image is
formed by a plane mirror?
A. real image
B. virtual image
C. multiple image
D. none of these

5. 4. Which of these is NOT the
property of an image formed by a
plane mirror?
A. The image obtained is virtual
B. The image is laterally inverted.
C. The image is erect.
D. The size of the image is smaller
than the size of the object.

6. 5. When the image of an object is seen
in a plane mirror, the distance from
the mirror to the image depends on
____.
A. the wavelength of light used for
viewing.
B. the distance from the object to the
mirror.
C. the distance of both the observer
and the object to the mirror.
D. the size of the image

7. ANSWER! (Try This)
1. C
2. A
3. B
4. D
5. B

8. How do we
see objects
around us?

9. Will our
eyes be able
to see in
the dark?

10. Where do
we get
light?

11. A luminous object is one that produces light.
An illuminated object is one that reflects light.
Luminous Objects Illuminated Objects
LUMINOUS AND
ILLUMINATED OBJECTS

12. We see things because they
reflect light into our eyes:
Homework

13. 4 PICS 1 WORD
REFLECTION

14. Activity: MIRROR, MIRROR ON THE WALL
THE MAN IN THE MIRROR

15. Activity: MY IMAGE AND ME
Directions: Analyze the nature of image
formed by a plane mirror.

16. 1. What is the size of image
formed by a plane mirror?
- same size as the object

17. 2. What type of image is
formed by plane mirrors?
- virtual image

18. 3. Where is the image of an
object in a plane mirror?
- behind the mirror

19. 4. Compare the distance of the man to
the mirror and the distance of his
image from the mirror.
- the distance of the man from the
mirror is the same as the distance of
his image from the mirror.

20. REFLECTION OF LIGHT
• Reflection is the
bouncing off light rays
when it hits a smooth
surface
• Example: a reflection in
a mirror.

21. 2 TYPES OF IMAGES FORMED
BY REFLECTING SURFACE
• REAL IMAGE - always inverted and is
formed by actual rays of light. It appears
in front of the mirror and can be
projected on the screen.
• VIRTUAL IMAGE - always erect and
formed by apparent rays of light. Virtual
image appears behind the mirror.

22. PROPERTIES OF AN IMAGE
FORMED BY PLANE MIRROR
• The image obtained is virtual.
• The image is erect.
• The size of the image is the same as
the size of the object.
• The distance between the image
obtained is the same as the distance
between the object from the mirror.

23. Characteristics of Image
Formed in a Plane Mirror

24. REFLECTION FROM A MIRROR:
Incident ray
Normal
Reflected ray
Angle of
incidence
Angle of
reflection
Mirror

25. The Law of Reflection
Angle of incidence = Angle of reflection
The
same !!!
The incident ray, normal line and the
reflected ray all lie in the same plane

27. Activity: HOW DO I LOOK?
Directions: Analyze the given
pictures below and answer the
questions that follow.
A. B.

28. APPLICATION
1. What do you think is the reason why
an “AMBULANCE” word is written in
reverse in an ambulance car?
- so that the driver of any vehicle
in its front can instantly read the
inverted word in their rearview mirror
and give way on an emergency.

29. APPLICATION
2. How do you write the word
“AMBULANCE” when seen in front
of a plane mirror?

30. ASSESS WHAT YOU HAVE
LEARNED
1.What law states that angle of
incidence is equal to the angle of
reflection?
A. Law of Inertia
B. Law of Reflection
C. Law of Acceleration
D. Charles’ Law

31. 2. If you stand three feet in front of a
plane mirror, how far away would you
see yourself in the mirror?
A. 1.5 ft
B. 3 ft
C. 6 ft
D. 12 ft

32. 3. Which of the following best describes the
image formed by a plane mirror?
A. virtual, inverted and enlarged
B. real, inverted and reduced
C. virtual, upright and the same size as
object
D. real, upright and the same size as
object

33. 4. When the image of an object is seen in a
plane mirror, the distance from the mirror
to the image depends on _____.
A. the wavelength of light used for
viewing.
B. the distance from the object to the
mirror.
C. the distance of both the observer
and the object to the mirror.
D. the source of light.

34. 5. All of these are properties of an image
formed by a plane mirror except
A. The image obtained is virtual.
B. The image is erect.
C. The size of the image is bigger than
the size of the object
D. The distance between the image
obtained is same as the distance
between the object from the
mirror.

35. ASSIGNMENT
1. What are the two kinds of
curved mirror?
2. Observed the images formed by
the two kinds curved mirrors.
Write at least three of your
observations in your notebook.