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5. LIGHT

5.1 REFLECTION

PLANEMIRROR

CURVEDMIRROR

CONCAVE

MIRROR

CONVEX

MIRROR

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Pilihlah Aku (bukan Bajuku)

Oi maknya, what scientific reasons

these holes as I seen on TV?Yes! its a good idea,

To release heat just by lifting our

hands straight 180 degrees up,

To evaporate more sweat withoutshowing my stomach to you

As a physical therapy to treat itchy atyour armpit.

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Normal

Incident

ray

Reflected

ray

i r

O

The Laws of Reflection:

5.1ReflectionofLight

1. Angle of incidence, i = angle of reflection, r

2. The incident and reflected rays and normal lie at the same plane

Mirror plane

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The experiment to investigate the relationship between incidence

angle, i and reflection angle, r

Power

supply

Ray box

Paper

Planemirror

Normal5o10o15o

25o

Protractor20o

ri

i o ro

5

10

15

20

25

ro

ro

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Serupa, Ada Rupa tapi Lebih Bodoh Rupanya!

Suddenly I look somebody ata window. It is like an alienI

walk in fear to get nearer to itand it does look like meIts

face, like a ghost, Its bodylousy, It smells veryintoxicated..

But.. He does as what I do.

When my nose and its nose

touch one another ..the alien

runs away very fast where

is it?

I laugh all day long, I never seethe bad, mad, fool + crazy catlike that!..

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Convex and Concave Mirror

Compare the images formed by convex mirror and concave mirror

Convex Mirror Concave Mirror

Virtual Virtual

Diminished Magnified

Erect Erect

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Concave MirrorConvex Mirror

Focalpoint

Focalpoint

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What the functions of the concave mirror and convex mirror?

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Position and Characteristics of Images by Concave Mirror

Object

Normal

Image

Object

Normal

Image

C F

C F

P

P

i) O > C

ii) O = C

1. Real (visible on a

screen)

2. Inverted

3. Diminished

4. Between F and C

1. Real

2. Inverted

3. Same size as object

4. At C

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ObjectC F ImageP

iii) O < F

What the characteristics of image?

1. Virtual (Cant be seen on a screen)

2. Upright

3. Magnified

4. Behind the mirror

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Position and Characteristics of Images by Convex Mirror

Object

Normal

CF

P

What the characteristics of image?

Image

1. Virtual (Cant be seen on a screen)

2. Upright

3. Diminished

4. Between P and F, behind the mirror

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The Application of Convex Mirror and Concave Mirror in Ours Life

State the examples application of Convex Mirror andConcave Mirror. State the characteristics of its image and

the advantages.

1. The Side Mirror of a Car

3. A Surveillance Mirror4. The Dentists mirror

2. A Blind Corner Mirror

I id t f

Wh th d AMBULAN

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> Incident ray from an

object is reflected by the

mirrorto observers eyes.

> The angle of incidence =

angle of reflection

> The image which is

formed in the mirror is

laterally inverted

Incidence ray

Normal

Mirror

Observer

i = r

Reflection ray

Why the words AMBULAN are

wrote in laterally inverted?

The Answer:

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PASSENGER

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