Spm Phy3 (kedah)

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SULIT 453113 Physia

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Paper 3 Sept. lYajam

No. Kad Pengenalan: N&IDa:

Angka Giliran:

".,.,. .•..•...."..........................•.............,. Tingkatan;

. "

:

.

PERSIDANGAN KEBANGSAAN PENGETUA-PENGETUA SEKOLAH MENENGAH . NEGERI KEDAH DARUL AMAN

PEPERIKSAAN PERCUBAAN SPM 2008 PHYSICS

Paper3

One hour and thirty minutes

JANGAN BUKA KERTAS SOALAN INI SEmNGGA DIBERITABU

1. Kertas soaIanin; oda/ob dalam dwibahaso. 2. Soalan dalam bahasa Inggeris mendohului soalanyang sepadan da/am bahasa Melayu.. 3. Colon dibenarluln menjaWab

useluruhan atau sebahagian soalan sama ada dalam bahasa Inggerisatau bahasaMelO)'U. 4. Colondikehendak: membaca maldumat di halaman belakang kertas soalan ini.

Untuk Kegunaan Pemeriksa Bahagian Soalan

Markah Martcah penuh diperoleh

1

16

2

12

3

12

4

12

A

B

Jumlah

Kertas soalan ini mengandungi 13 halaman bercetak SULIT

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Section A

BahaglanA

[28 marks]

Answer all questions in this section.

Jawab semua soalan do/am bahagian int.

1

A student canies out an experiment to investigate how the temperatureof water increaseswith the time of heating. Diagram 1.1 shows the set up of the apparatus for the investigation. Before the heater is switched on, the initial temperature, 00. of the water is measured.Diagram 1.2 shows meniscusofthe mercury column in the thermometer, Seorangpe/ajar menjalankan satu eksperimen untuk menyiasat bagaimanasuhu air bertambah dengan masa pemanasan. Rajah 1.1 menunjukkan susunan radas bagi penyiasatanitu. Sebelum pemanas dihidupkan; suhu awal, 80 bagi air itu diukur. Rajah 1.2 menunjukkan menlskus bagi turus merkurt dalam termometer. Thermometer Termometer To power supply .--::::-...... Ke bekalan kuasa

Immersionheater Pemanas rendam

Diagram 1.11 Rajah'1.1 A stopwatch and the heater are switchedon simultaneously. At time, I = 20 s, the temperature, O. of the water is read on the thermometer. Diagram 1.3 shows the meniscus ofthe mercury column in the thermometer. The procedure is repeated for heating time, I = 40 S. 60 s, 80 s, and 100 s, The positions ofthe meniscus ofthe mercury column in the thermometerare shown in Diagrams 1.4, 1.5, 1.6 and 1.7. Sebuahjam randik don pemanas dihidupkan serentak: Pada masa, I = 20 s, suhu. 0, bag; air itu dibaca pada termometer. Rajah 1.3 menunjukkanmeniskus bagi turus merkuri da/am termometer itu. Procedure itu diulang bagi masa pemanasan; I = 40 s, 60 s, 80 s, and 100 s. Kedudukan-kedudukan meniskus bagi turus merkuri dalam termometeradalah seperti ditunjukkan da/am Rajah 1.4, 1.5; 1.6 and 1.7.

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t = 20 s

t =40 s

t = 60 s

0= ...........

0= ...........

8 = ...........

Diagram 1.3 Rajah 1.3

Diagram 1.4 Rajah 1.4

Diagram 1.5 Rajah 1.6

t = 80 s

8=

t = 100 s

.

Diagram 1.6 Rajah 1.6

(a)

8=

.

Diagram 1.7 Rajah 1.7

For the experiment described above, identify: Bagi experiment yang diterangkan di alas. kenal pasti (i) the manipulated variable I pembolehubah dimanipulai..ikan

...............................................................................................

[I mark] (ii)

the responding variable I pembolehubah bergerak balas

.............................................................................................

[I mark] (iii) a constant variable I pembolehubah dimalarkan

................................................................................................

[1 mark]

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4 .(b) Based on Diagram 1.2, determine the initial temperature, 80, ofthe water. Berdasarkan Rajah J.2. tentukan sunu awal, 80. bag; air itu.

Initial temperature / suhu awal., 80 =

.

[1 mark] (c) Based on Diagrams 1.3, 1.4, 1.5, 1.6 and 1.7, Berdasarkan Rajah J.3, 1.4. 1.5. 1.6 dan J. 7. (i) Record the thermometer readings, 8, in the spaces provided on page

3. Catatkan bacaan-bacaan termometer, 8. dalam ruang yang disediakan di halaman 3. [1 mark] (ii)

Calculate the values of A8 for each heating time using the formula AO =0 - 00 , Tabulate your results for 8 and A8 for all values of tin the space below. Hitungkan nilai-nllai A8 bag; setiap masa pemanasan dengan menggunakanformula A8 =8 - 80 , Jadualkan keputusananda bag;

Ddan AD bag;semua nilai I pada ruangdi bawah. [5 marks]

(d)

On the graph paper on page 5, plot a graph of A8 against t. Pada kertas grafdi halaman 5. lukis grafA8 melawan I. [5 marks]

(c)

Based on your graph, state the relationship between A8 and t. Berdasarkangrafanda; nyatakan hubungf/nantara AD dan t.

.

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[1 mark]

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5

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Graph of !:iB against t

Graf !:iB melawan t

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6

A student carries out an experiment to investigate the interference of sound waves. Two loudspeakers are connected to an audio signal generator. The student measured the distance between two adjacent loud sounds, x, for different values offrequency,f The student then plots a graph off against

.!.. x

as shown

in Diagram 2. I. Seorang pelajar menjalankan satu eksperimen untuk menyiasat interferens bagi gelombang bunyi. Dua pembesar suara disambungkan ke satu penjana isyarat bunyi. Pelajar itu mengukur jarak antara dua bunyi kuat bersebelahan, x, bagi nilai-nilai frekuensi yang berlainan, f Pelajar itu kemudian melukis graf f melawan.!.. seperti yang ditunj~kkan dalam Rajah 2.1. x

11Hz ! ...

.800 _.

600

;

...

... .... ..- ­

i

, •.

-­ _.

... -. ..

j

400



.

200 t

o

0.2

0.4

0.6

0.8

1.0

I, -J -m x

Diagram 2.11 Rajah 2.1

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SULIT (a)

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Based on the graph on Diagram 2.1, Berdasarkan grafpada Rajah 2. J . (i) State the relationship between x andj;

Nyatakan hubungan antara x dan f.

(ii)

[1 mark] Determine the frequency,/, when the distance between two adjacent loud sounds, x, is 2.0 m. Show on the graph how you determined/. Tentukan frekuensi, f. apabila jarak antara dua bunyi kuat berturutan, x, iaJah 2.0 m. Tunjukkan pada grafbagaimana anda

menentukan f

[3 marks] (iii) Calculate the gradient of the graph, m.

Show on the graph how you determined the gradient.

Hitungkan kecerunan graf. m.

Tunjukkan pada grafbagaimana anda menentukan kecurunan.

[3 marks] (b)

Given that A. =

ax and v =f).., write an expression ofv in terms of D./. a D

andx. Diberi bahawa A. '= ax dan v = f).., tuliskan satu ungkapan bagi v dalam

D

sebutan D. J: a dan x.

[1 mark]

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(c) Given thatxf= m.

By using the value of the gradient. m, obtained in (a)(iii) and the

expression in (b). calculate the velocity of sound in air when D = 2.8 m and a = 1.2 m. Diberikan x f= m. Menggunakan nilai bagi kecerunanyang dipero/eh dalam (a)(iii) dan ungkapan da/am (b). hitungkan ha/aju bunyi di udara apabi/a D = 2.8 m dana = 1.2 m.

[2 marks-]

(d) State two precautions that should be taken during this experiment. Nyatakan dua langkah berjaga-jagayang patut diambil da/am eksperimen ini.

[2 marks]

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Section B BahagianB [12 marks] Answeranyone question from this section.

Jawab mana-mana sata soalan daripadabahagianini.

Diagram 3.1 shows Jason and Jimmyon a tandem bicyclewith Jimmyalone pedaling. They found that the speedofthe bicycle increases at a slow rate. Rajah 3.1 menunjukkanJason dan Jimmy dt atas basikal kembardenganJimmy sahajayang mengayuh. Mereka mendapati bahawakelajuan basika/ bertambah pada kadar yang rendah.

3

Speed increasesat a slow rate Ke/ajuan bertambahpada kadar rendah

,~--:-,,_.

,',

-a;

,,;

Jimmy is pedaling Jimmy sedang mengayuh

Diagram. 3.1/ Rajah 3.1

Speed increases at a higher rate Ke/ajuan bertambahpada kadar lebih tinggi

~

"

",;:'

"

.. 'Jason'anaJfiiiiityarepooaling" Jason dan Jimmy sedang mengayuh Diagram 3.2 / Rajah 3.2

Diagram3.2 shows that when both Jason and Jimmy are pedalling, the speed of the bicycle increases at a higherrate.

Rajah 3.2 menunjukkanbahawaapabila kedua-dua Jason dan Jimmy sedang

mengayuh; ke/ajuan basikal bertambah pada kadaryang /ebih tinggi.

Basedon the observationon Diagram 3.1 and Diagram 3.2 and using your knowledge of the effect of forceon motion: Berdasarkanpemerhatian anda pada Rajah 4.1 dan Rajah 4.2 dan menggunakan pengetahuan andatentang kesan daya terhadapgerakan: (a) State one suitable inference. Nyatakan satu inferensyang sesuai. [I mark] (b)

State one hypothesisthat could be investigated. Nyatakan satu hipotesisyang bo/ehdisiasat. [I mark]

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(c) With the use of apparatus such as a trolley, a ticker timer, rubber bands and other apparatus, describe an experiment to investigate the hypothesis state in 3(b). . Dengan menggunakan radas seperti troli, jangka masa detik; gelang­ gelang getah dan radas lain, terangkan satu eksperimen untuk menyiasat hipotesis yang dinyatakan di 3(b). In your description, state clearly the following: Dalam penerangan anda.jelaskan perkara berikut: (i) The aim of the experiment. Tujuan eksperimen. (ii) The variables in the experiment. Pembolehubah dalam eksperimen. (iii) The list of apparatus and materials. Senarai radas dan bahan. (iv) The arrangement of the apparatus. Susunan radas. (v) The procedure used in the experiment. Describe how to control and measure the manipulated variables and how to measure the responding variables. Prosedur yang digunakan dalam eksperimen.

Terangkan bagaimana mengawal dan mengukur pembolehubah

dimanipulasikan dan bagaimana mengukur pembolehubah bergerak

balas.

(vi) The way to tabulate the data. Cara untuk menjadualkan data. (vii) The way to analyse the data. Cara untuk menganalisis data. [10 marks)

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SULIT 4

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Diagram 4.1 shows an electric bell which rings softly when the switch is pressed. Diagram 4.2 shows the same bell ringing loudly when the switch is pressed. Rajah 4.1 menunjukkansebuah loceng elektrik yang berderingdengan bunyt yang lemah apabila suis itu ditekan: Rajah 4.2 menunjukkan loceng yang soma berdering dengan buny; yang lebih kuat apabila suis itu ditekan: Switch Suis

_ 2 cell power supply - - Bekalan kuasa 2 sel

Electromagnet E/ektromagnet

Soft sound is heard Bunyi Ie""'" didengar

Diagram 4.11 Rajah 4.1

-=- 4 cell power supply :

Bekalan kuasa 4 sel

Loud sound is heard Bunyi kuaJ didengar

~

~

Diagram 4.21 Rajah 4.2

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Based on the above information and observation: Berdasarkan maklumat dan pemerhatian di alas: (a)

State one suitable inference. Nyatakan satu irferens yang sesuai. [I mark]

(b)

State one suitable hypothesis. Nyatakan sam hipotesis yang sesuai. [1 mark]

(c) With the use of apparatus such as a solenoid, rheostat, direct current power supply, paper clips and other apparatus, describe an experimental framework to investigate the hypothesis stated in 4(b). Dengan menggunakan radas seperti solenoid, reostat, bekalan kuasa arus terus, klip-kJip kertas dan radas-radas lain, terangkan satu rangka kerja untuk menyiasat hipotesis yang anda nyatakan di 4(b). In your description, state clearly the following: Dalam penerangan anda jelaskan perkara berikut: (i) Aim of the experiment. Tujuan eksperimen. (ii) Variables in the experiment. Pembolehubah dalam eksperimen. (iii) List of apparatus and materials Senarai radas dan bahan. (iv) Arrangement of the apparatus. Susunan radas. (v) The procedure of the experiment which include the method of controlling the manipulated variable and the method of measuring the responding variable. Prosedur eksperimen termasuk kaedah mengawal pembolehubah dimanipulasikan dan kaedah mengukur pembolehubah bergerak balas. (vi) The way to tabulate the data. Cara untuk menjadualkan data. (vii) The way to analyse the data. Cara untuk menganalisis data. [10 marks]

End of Question Paper Kertas Soalan Tamat

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