student's copy module 5

8/6/2019 Student's Copy Module 5

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PPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMI

PHYSICS

FORM 4

MODULE 5

PPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMIPPSMI

LIGHT

MINISTRY OF EDUCATION MALAYSIA


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MODULE 5: LIGHT

Arahan:

1. Modul ini mengandungitiga puluh soalan. Semua soalan adalah dalam bahasa

Inggeris.

2. Modul merangkumienam konstruk yang diuji

K1-Memahami soalan dalam Bahasa InggerisK3-Memahami istilah sains dalam Bahasa InggerisK5-Menguasai konstruk pengetahuanK6-Menguasai konstruk kefahaman

K7-Menguasai konstruk kemahiranK8-Mengeluarkan maklumat/idea dalam Bahasa Inggeris

3. Murid hendaklah menulis maklumat diri dalam kertas jawapan objektifdisediakan. Murid juga perlu memastikan maklumat konstruk, nombor soalan dan

jumlah soalan seperti yang dibaca oleh guru di dalam ruangan disediakan dalamkertas jawapan objektif sebelum ujian.

4. Bagisoalan objektif, anda perlu menandakan jawapan dengan menghitamkan pilihan jawapan pada pilihan jawapan A , B , Catau D pada kertas jawapanobjektif.

Contoh:

Antara berikut, yang manakah haiwan?

A. Pokok B. Kambing C. Kereta D. Pen

5. Untuk soalan subjektif, jawapan hendaklah ditulis pada kertas berasingan

yang disediakan oleh guru.

6. Jawab semua soalan.

Modul ini mengandungi21 halaman bercetak

DA B C E


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1. An object of height 10.0 cm is placed 20.0 cm from a convex lens of focallength 30 cm. The magnification of the image formed is 3.

What is the focal length of the convex lens?

A. 3.0 cmB. 10.0 cmC. 20.0 cmD. 30.0 cm

2. The figure shows a light ray travelling from air into a semicircular glass block.The angle of incidence is 42

owhile the angle of refraction is 90

o. The refractive

index of glass is 1.63.

What is the angle of incidence?

A. 420B. 480C. 900

3. A girl is standing 2.0 m away from a plane mirror. When she walks 0.5 mfurther away from the mirror, she is now 2.5 m away from the mirror, and5.0 m away from her image in the mirror.

The distance between the girl and her image in the mirror is now

A. 0.5 mB. 2.0 mC. 2.5 mD. 5.0 m

42o

48o

90o


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4. The refractive index, n, of water is the ratio of real depth, H, to the apparentdepth, h.

The refractive index is

A. Real depth x Apparent depth

B.depthReal

depthApparent

C.depthApparent

depthReal

D.depthRealXdepthApparent

1


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5. The figures show various types of optical instruments and their functions.

Helps in study of planets andstars in outer space

Helps to see very tiny things

Helps to see distant objects Corrects short-sightedness

and long-sightedness

What is a microscope used for?

A. To look at distant objectsB. To look at very tiny thingsC. To correct short-sightedness and long-sightednessD. To study planets and stars in the outer space

Binoculars Spectacles

Telescope Microscope


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6. The figure shows a pair of binoculars.

What is the light phenomenon that occurs when a light ray passes through theprisms?

A. RefractionB. DiffractionC. ReflectionD. Total internal reflection

7. The figure shows an object placed in front of a convex lens.

The image formed on the screen is

A. virtualB. uprightC. inverted

object

image


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8. For questions 8 to 10, choose the best terminology that best relates to each

photograph shown.

A. Critical angleB. Inverted imageC. Diminished imageD. Magnified image

9.

A. ReflectionB. RefractionC. DiffractionD. Interference


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10.

A. Refraction

B. ReflectionC. DiffractionD. Total internal reflection

11. The figure shows a boy standing in a swimming pool. The father observesthat his sons legs appear shorter in the water . This is due to

A. reflectionB. refraction

C. diffractionD. interference


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12.

mediumainlightofSpeed

vacuuminlightofSpeed=n

n represents

A. Snells lawB. power of lensC. refractive indexD. linear magnification

13. The figure shows a convex lens.

x represents the

A. focal lengthB. principal axisC. object distanceD. image distance

object convexlens

screen

x y


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14. A girl looks into a mirror while combing her hair.

The image she sees in the mirror is

A. realB. virtualC. invertedD. smaller than her

15. The figure shows a light phenomenon caused by total internal reflection.

What is the natural phenomenon shown?

A. StormB. MirageC. RainbowD. Evaporation


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16. Which figure shows correctly light rays passing through a concave lens?

AB

C D


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17. The figure shows a glass prism. The critical angle of glass is 42. A light rayPQ is incident on its surface.

Which figure shows the correct path of the light ray?

P Q

45

0

A B

CD


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18. Which of the following ray diagrams is correct?

F

A

CO F

C

B

OF

C

C

O F

C

D

O F


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19. The figure shows a torch light with a concave reflector.

A bulb is placed in front of the concave reflector so that light rays are reflectedas parallel rays out of the torch light.

Which is the best position of the bulb to illuminate a far object?

A. At FB. At XC. At YD. At Z

X

. . .Y. F

F- focal point of the concave reflector

Z

Reflector


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20. The figure shows a convex mirror used as a blind corner mirror at a sharpcorner.

An advantage of using a convex mirror is that

A. the image is magnifiedB. it has a wide field of viewC. the size of a near object can be estimatedD. the distance of a near object can be estimated

Convexmirror


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21. The figure shows a glass full of water placed between a light bulb and ascreen.

Which of the following shows the correct path of the light rays?

A

B

C

D


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22. A convex lens of focal length,10.0 cm is used to produce an image of thesame size as the object.

Which is the object distance?

A. 0.5 cmB. 2.0 cmC. 10.0 cmD. 20.0 cm

23. The figure shows a light ray passing through a glass block.

What is the refractive index of the glass block?

(Refractive index =sinr

sini)

A. 1.22B. 1.35C.

1.41

D. 1.52

45o

30o


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24. The figure shows a candle placed at a distance of 10.0 cm from lens Q. Thescreen is placed at a distance of 15.0 cm when a sharp image is formed on it.

What is the focal length of the lens?

+=

v

1

u

1

f

1

A. 0.17 cmB. 6.0 cmC. 10.0 cmD. 25.0 cm

25. The figure shows a light ray which is incident onto a plane mirror.

What is the value ofx?

A. 35o

B. 40oC. 55

o

D. 70o


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26. A student is standing at a position of 2.0 m from a large plane mirror. Then hewalks 0.5 m towards the mirror.

What is the distance between the student and his image in the mirror now?

A. 0.5 mB. 1.5 mC. 3.0 mD. 4.0 m

2.0 m

Plane mirror


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27. The figure shows parallel rays pass through in convex lens and form a blurimage on the screen. Point F is the focal point of the lens.

A sharp image can be formed on the screen by

A. replacing the convex lens with a concave lensB. using a more powerful convex lensC. adding another convex lens in between the screen and the first lens.D. using a convex lens with a longer focal length.

28. You are provided with a convex lens of focal length 10.0 cm.

The convex lens is held at a distance less than 10.0 cm from the ant.Compare the size of the image of the ant and the size of the ant.

Parallel rays

screen

F

Convex lens

ant


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29. When another convex lens is held at a distance above a dry leaf for alongtime, the leaf is burnt.

How far is the leaf from the lens?___________________________________________________________

___________________________________________________________

30. State a reason for the burning of the leaf after a long time.___________________________________________________________

___________________________________________________________

leaf

convex lens


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student's copy module 5

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