Presented by:

Agcaoili, Mikaela F.

IV-31 BSE General Science

Observe different

pictures and tell their

required characteristics

FIGURE 1

C F V

Location:Image is formed IN FRONTof the mirror

Size:

the object is SMALLER

Orientation:

the object is INVERTED

•Type: The object is real

C F V

Type: The object is REAL

FIGURE 2

C F V

Location:Image is formed BEHIND the mirror

Size:

the object is SMALLER

Orientation:

the object is UPRIGHT

•Type: The object is real

C F V

Type:Image formed is VIRTUAL

The missing letters to the words below by using a

chart of numbers

_____ ____A ____ H ____ ___ ___ L 2C 1B 3C 2A 5D 1E

____ ____ T ____ O _____ 4B 4C 3B 1D

For Mirrors

A B C D E

1 E R O A B

2 I H G O G

3 E H P H T

4 L M E R W

5 O N H C S

GRAPHICAL METHOD

FOR MIRRORS

Locating object with the used of ray diagrams

Ray Diagrams is used for determining the path

taken by light from the object to the mirror to

our eyes

CONCAVE MIRRORS1. An incident ray which is parallel to the principal axis is

reflected through the focus of the mirror.

2. An incident ray which passes through the focus of themirror is reflected parallel to the principal axis.

3. An incident ray which passes through the centre ofcurvature of the mirror is reflected back along its ownpath (since it is normally incident on the mirror).

4. An incident ray which strikes the mirror at its vertex isreflected such that its angle of incidence with respect tothe principal axis is equal to its angle of reflection.

C F V

CONVEX MIRRORS 1. An incident ray which is parallel to the principal axis is

reflected as if it came from the virtual focus of the mirror.

2. An incident ray which is directed towards the virtualfocus of the mirror is reflected parallel to the principalaxis.

3. An incident ray which is directed towards the centre ofcurvature of the mirror is reflected back along its ownpath (since it is normally incident on the mirror).

4. An incident ray which strikes the mirror at its vertex isreflected such that its angle of incidence with respect tothe principal axis is equal to its angle of reflection.

C F V F C

Evaluation:The diagram below shows a spherical surface that issilvered on both sides. Thus, the surface serves asdouble-sided mirror, with one of the sides being theconcave and one being the convex side. The principalaxis, focal point, and center of curvature are shown.The region on both sides of the mirror is divided intoeight sections (labeled M, N, P, Q, R, S, T, and W).Five objects (labeled 1, 2, 3, 4, and 5) are shown atvarious locations about the double-sided mirror.

1. The image of object 1 would be located in section _____.

M N P Q R S T W

2. The image of object 2 would be located in section ______.

M N P Q R S T W

3. The image of object 3 would be located in section ______.

M N P Q R S T W

4. The image of object 4 would be located in section ______.

M N P Q R S T W

5. The double-sided mirror would cause real image to be formed of objects ________.

a. 1, 2, and 4 b. 1, 2, and 3 c. 3 and 5

d. 4 and 5 e. 3 only

5. The double-sided mirror would cause real image to be formed of objects ________.

a. 1, 2, and 4 b. 1, 2, and 3 c. 3 and 5

d. 4 and 5 e. 3 only

ANSWERS:1. S

2. R

3. P

4. M

5. A