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NO K D PENC

ENALAN

ANCK A GILIRAN

,JARArI ANPELAJARAN NEGEHl JOHOH

PEPERIKSAAN PERCUBAAN

SIJIL PELAJAR AN MALAYSIA 2008

Kertas 2

September 2 8

2 9; am Dua

jam

tiga puluh

minit

.JANGAN BUK A KEHTAS SOA1,AN IN1 SEHINGGA DIBERITA HU

I

l lr i ~ \ k ~ ~ n~ornborkad

peogenalan

c/nn

a n g k a

giliran rmr1(1 p(1(1(1 1run.y vang

clr wclrukun

4 [ . ' ~ J I ( J Y ~fihenr~rkdt~ n~rnjcnvclh

ke.cei urrriitrrl rriuri .sehnhngicm so alnn

. V U I J I L J rdij (/r;1~11n(I~I(J .Y(It?ggcri.s I I L J I ~

n l/?tl~vtrM~ l ( l~ 1 l .

. .

Kerlas soalall ini merrgarrdurrgi 3 halarnan bercetak clan

1

lralanian ridak bercetak

Kod Penieriksa

Bahagia~i

Markati

I enuti

4

6

7

8

8

10

12

Soalan

2

3

4

5

6

7

Markah

Diperoleh

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SULIT

3

Section

Bahagian 4

[6 marks]

[6 markah]

A n ~ w e r

ll

question in this secrion.

Jmvab

semua

so ah n dalatn hahagian ini.

Diagram show s a displacement time graph of the oscillation of a loaded sprin g.

Rajah

1

nlenunjukkan graf sesaran masa hagi saru ayunan spring herheban.

Displacement 1

rn

Stsaran

cm

Time s

Masa

s

Diagram

Rajah

1

a )

Base on D iagram 1

Berdusarkan Rajah,

i)

Label the period using the symbol 7 .

Labelkan rempoh nrenggunakart simbol T .

ii)

Wh at is the period of the oscillation?

Bera yakah tenlpoll hagi satu ayunan?

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SLSLIT 4

6)

What is meant

by

amplitude?

Apnkuh yang d im a h d k a n dengan amplitudl

[

mark1

[

markuh]

c)

If the spring is undergoing damping what will happen to the amplitude o f the

oscillation?

J i h spring i tu mengalami pe lembcpn apakuh yang a h erlaku kepadu

umplitudnya?

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SULIT

Diagmm 2.1 shows a driver that is driving under a hot sun, sees a pool of water

appea ring on the road ahea d, but the pool of water disappears as the ca r approach es it.

Rajah 2.1 menunjukkan seorang pemandu yang sedang memandu pada hari yang punas

ternampak tompokun air di hadapan, telapi tompokan uir ilu hilang apabila l~emundulu

menghampirinya.

Image of the cloud

een as a pool of water

Imej rnvan kelihatan

seperti tompokun air

Diagram 2.1

Rajah

2.1

a )

Na me this natural phenomenon s observed by the driver.

Nama kan fenumena semula jadi ini.

[

mark]

[ l markah]

b )

State the physics concept that is involved in this phenomenon.

Nyalakan ko nse pjz ik yang ~e rlib af alam fenomena ini

[ l

mark]

[ l markah]

c ) i)

How is the density o f the cool air compare to the density of the warm air?

Ba nd ing km ketumpafan udara sejuk dengan udara suam.

[ l mark]

[ l markuh]

ii)

When light rays propagates from a denser medium to a less dense medium,

state what happen to th e direction of the refracted rays.

Apabila cahaya merambal dari medium lebih turnpat ke medium kurang

tunrpal, apakuh yang akun berlaku kepada arah perambalun gelombang

cahaya yang ferbias.

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SULIT 6

(iii)

Complete Diagram

2.2

to show the formation of the natural phenomenon as

shown in Diagram 2.1.

Lenghphn Rajah

2 . 2

ditunjukkan lam Rajah

2.1.

Light from the cloud

Cuhaya dari awan

Light to driver s eyes

Cahuya ke mata pernandu

Cool air

,

...

,..

Udara panm

/ / ~ o a d

Jalan

Image of the cloud

seen s a pool or .later

Imej w a n kelihatan

seperti fompokan air

Diagram

2.2

Rajah

2.2

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SIJ1 IT

7

3

Diagram 3.1 sho ws a cheetah chasing a dee r in a wild w orld. ( 3 i ~ c n hat thc niits.; ~ l n d

velocity o f the cheetah and the deer are 60 kg 20 ni s v and

70

kg 5 s ~ 'espectively.

Diagram 3.2 show s the cheetah successfully landed il's jaws on thc deer and b o ~ h f rhcm

are movin g with a same velocity of v s .

Ktljirlr 3.1 tnenlin~rikkun eekor /~ t~r i t i i t~t iin~t i t igrri/tiiig nreiigt

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SULIT

8

4 i )

Name the Physics principle that is involved in the above hunting.

Namakan pr im @ Fizik yang terlibat dalam pemburuan di arm

l mark]

[ l markah]

ii)

Define the Physics principle that you mension in

d) i).

TaknjRan pr im @ Fizik yang anda nyatakan dalam dXi).

mark1

[ markah]

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SULIT

9

4

Diagram 4.1 shows a SONAR waves is sent by transmitter at the lower

part

of the boat and

the echo es are detected by hydrophone.

Diagram

4.2

sh ow s the trace on the screen of oscilloscope.

Rujuh 4.1 menunjukhn gelombang SONAR yang dihuntar melmlui transmitter ke cla.var /nut

dun gem0 dikesan oleh hidrofon.

Rajah 4.2 menu njukkan surihan gelombang yang dipaparkan oleh skrin osilo.skop

Diagram 4.1

Rajah 4.1

Diagram 4.2

Rajah

4.2

a )

What is meant by wavelenght?

A pa hl z yang dimaksudkan dengan panjang gelombang?

. . . . . . , , . . , . . . . . . . . . , . . . . . . , . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . 3 . . . . . . . .

[ mark]

[I markah]

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10

b )

Sound waves with fiequency of 5.8

x

10 z are used to determine the depth of

the sea.

The

speed of sound w aves in sea water is 1250 ms-I. The time-base o f the

oscilloscope is adjusted at 50 ms cm-I. If the time interval between the transm itting

and receiving a pulse of waves is 1.2

s.

Calculate

Gelombang bunyi ber /e ku en ~i

.8 x 10 Hz

digunakan untuk mene ntukan

kedalam an laut. Laju gelombang air ialah

1250 m i l .

Dasar- masa bag i

50 ms cm-I.

Jika sela m asa di antara den yutan

gelom bang tuju dun gelombang yang diterima adalilh

1.2 s. Hitung

(i)

the depth of the sea.

kedalaman laut

[ marks]

[2

markahj

(ii)

the wavelength of the sound wave.

panjang gelombang b agi gelombang bunyi

[2

marks]

[ markahJ

c )

Observe the Diagram

4.1

and 4.2.

Pevhatikan Rajah

4.1

dun Rajah

4.2

i )

Com pare the am plitude of the reflection waves.

Bandingkan am plilude gelombang panlulan yang dihasilkan

[

mark]

[ l

markah]

(ii)

c)

(i)

(c)(i)

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J

I . I T

5 Diagram 5 1 show s a

placed on an ice block

Diagram 5 2 show s

an

Rtrjoh 5 1 rncr7zrr?jukk~ln eb~ ln ile ~o kk on li

u ns

hlok oic.

Rqjali 5 2 ~?rerrllnjltkkn~rlok 0i.c tnnpa hebun tli Lrr~c.vn>,tr

Bebon

Ice block

A i r hlok

,u)

What

is

mean1 by iiensily?

[

mark]

[ / I I ( I I . ~ L I I \

h )

f:splain \ \ h y [he ice block float in water

J e l ~ n k u n cjngrr/,tr bl ok r1i.r teralpzrrlg rlultnn ~rir ..

)

What are the fo rces ac t i ~ ~ g

n

the ice block?

/Iptrkrllr ~/ crj~ c~- tlrr ~tr~1trgerlr~rtltrk t, rl~rrs lok

err\'

MOZ@C

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SUL T 12

4

Base on D iagram

5.1

and D iagram

5.2,

Berdusarhn Rajah 5.1 dan Rajah 5.2,

i )

compare the volum e of water displaced.

[I mark]

[I markah]

ii)

compare [he weight

o

water displaced.

handingkan berat air yung tersesar

[I

mark]

[ I markah]

iii) Co mp are the buoyant force.

bandinghn daya ulangan

[ mark]

[

markah]

iv) State the relationship between buoyant force and the weight of water

displaced.

Nyatakan hubungarr dinntara dnya julangan dan berat air yang t