Trial Sgor Phy p3 2008

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1 16A

2 12

3 12B

4 12

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JABATAN PELAJARAN NEGERI SELANGORPROGRAM PENINGKATAN PRESTASI

SAINS DAN MATEMATIK SPM2008

Physics

Paper 3

One hour and thirty minutes

DO NOT OPEN THIS QUESTION PAPER UNLESS TOLD

1. This question paper consists of two sections:SectionA andSection B.

2. Answer all questions inSection A. Write youranswers forSection A in the space providedon the question paper.

3. Answer one question from section B. Writeyour answer for Section B on the lined pagesat the end of this question paper. AnswerSection B in detail. You may use equations,diagrams, tables, graphs and other suitablemethods to explain your answer.

4. Show your working, it may help you to get marks.

5. If you wish to cancel any answer, neatly cross out the answer.

6. The marks allocated for each question or part of a question is shown in brackets.

7. You may use a non-programmable scientific calculator for your calculations.

8. The time suggested answering, Section Ais60 minutes andSection B is30 minutes.

9. Hand in this question paper at the end of the examination

This question paper contains 17 printed pages.

4531/3

Physics

Paper 3

Sept

2008

12

1 hours


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Section ABAHAGIAN A

28 marks28 markah

Answer all questions in this section.

Jawabsemuasoalan dalam bahagian ini.

Suggested time for this section is 60 minutes.Masa yang dicadangkan untuk menjawab bahagian ini ialah 60 minit.

1 An experiment is carried out to study the relationship between angle of incidence, iand angle of refraction, r. The arrangement of the apparatus for the experiment is asshown in Figure 1.1.Satu eksperimen dijalankan untuk mengkaji hubungkait antara sudut tuju, i dengan sudutbiasan, r. Susunan radas bagi eksperimen ditunjukkan seperti dalam Rajah 1.1.

A semi circular glass block is placed on a piece of plain paper and the outline of theglass block is traced. The centre of the flat side of the block is marked as O and the

block is then removed. The normal is drawn and the incident angle, i= 10o is marked.

The glass block is placed back to its original position and the ray box is arranged sothat a single ray is directed to the point O with the incident angle, i = 10o . Theposition of the refracted ray is marked and drawn. The refracted angle, ris measuredas shown in Diagram 1.2 on page 3. [ The refracted angle is the angle between therefracted ray and the normal line]

2

Diagram 1.1Rajah 1.1

Power supplyBekalan kuasa

Plain paper

Kertas putih

Ray boxKotak sinar

Semicircular glass blockBlok kaca semibulatan


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The experiment is repeated for the values of i = 20o , 30o , 40o and 50o . Thecorresponding refracted ray obtained is as shown in Diagram 1.3, 1.4, 1.5 and 1.6 onpages 4 and 5 .

Sebuah blok kaca semibulatan diletakkan di atas sehelai kertas putih dan bentuknya disurih.Titik tengah bagi sisi yang rata pada blok kaca itu ditandakan O dan blok itu kemudiandialihkan. Garis normal dilukiskan dan sudut tuju, i = 10

oditandakan.

Blok kaca itu diletakkan semula di kedudukan asalnya dan kotak sinar disusun supaya satusinar tunggal dipancarkan ke titik O pada sudut tuju, i = 10

o. Kedudukan sinar biasan

ditandakan dan dilukiskan. Sudut biasan,r diukur seperti yang ditunjukkan pada Rajah 1.2pada halaman 3.[Sudut biasan adalah sudut antara sinar biasan dan garis normal]

Eksperimen diulangi dengan nilai i = 20o

, 30o

, 40o

dan 50o. Sinar biasan yang sepadan

dilukiskan seperti yang ditunjukkan pada Rajah 1.3, 1.4, 1.5dan 1.6 pada halaman 4 dan 5.

3

Incident raySinar tuju


Normal

Incident angle, i= 10o

Sudut tuju, i = 10o

Refracted raySinar biasan

O



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Normal


Sudut tuju, i = 30o


O

Incident raySinar tuju Diagram 1.3

Ra ah 1.3

Normal


Sudut tuju, i = 20o


OSemicircular glass blockBlok kaca semibulatan


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DIAGRAM 1.6[RAJAH 1.6]


Diagram 1.5Ra ah 1.5

Normal


Sudut tuju, i = 40o


OSemicircular glass blockBlok kaca semibulatan

5


Normal


Sudut tuju, i = 50o


O



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(a) For the experiment described on page 2, identify:Bagi eksperimen yang diterangkan pada halaman 2, kenalpasti:

(i) the manipulated variable,pembolehubah dimanipulasikan

..........................................................................................................................[1 mark]

(ii) the responding variable,pembolehubah bergerakbalas

.................................................................................................................................[1 mark]

(iii) a fixed variable.pembolebah dimalarkan

..................................................................................................................................[1 mark]

(b)Based on Diagrams 1.2, 1.3, 1.4, 1.5 and 1.6 on pages 4 and 5, measure therefracted angle by using the protractor.Tabulate your results for every value of i, r, sin i and sin r in the space below.

Berdasarkan Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6 pada halaman 4 dan 5, ukur sudut biasandengan menggunakan protraktor.Jadualkan keputusan anda bagi setiap nilai i, r, sin i dan sin r dalam ruang di bawah.

[7 marks]

(c) Plot a graph of sin r against sin i on page 7.Lukiskan grafsin rmelawansin i, pada halaman 7. [5 marks]

(d) Based on the graph in (d), to state the relationship between r and i.Menggunakan graf anda di (d), nyatakan hubungan antara r dan i.

........................................................................................................................................[1 mark]

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Graph of sin r against sin iGrafsin rmelawansin i

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2. A student carried out an experiment to investigate the relationship between thedistance of two consecutive loud sounds, x and the frequency of the sound wave, f byconnecting two identical loud speakers to an audio generator. The student then plottedgraph f against 1/x, as shown in Diagram 2.1.

Seorang pelajar menjalankan satu eksperimen untuk mengkaji hubungan antara jarak bagi duabunyi kuat yang berturutan, x dengan frekuensi bagi gelombang bunyi, f denganmenyambungkan dua pembesar suara yang serupa kepada sebuah penjana isyarat audio.Pelajar itu kemudian memplotkan graf f melawan 1/x seperti pada Rajah 2.1.

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0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

f / Hz

1/x / m-1

200

400

600

800

1000

1200

Graph of f against 1/xGraf f melawan 1/x


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(a) Based on the graph of 1/xagainst fon page8,Berdasarkan graf 1/x melawan f pada halaman 8,

(i) state the relationship between x and f.nyatakan hubungan antara x dan f.

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

[1 mark]

(ii) determine the value of x when f = 380 Hz.Show on the graph how you determine the value of x.tentukan nilai x apabila f = 380 Hz.Tunjukkan pada graf bagaimana anda menentukan nilai x.

x = ..........................[3 marks]

(b) The distance between two consecutive loud sounds, x and frequency, f of the soundwave is related by the formula:Jarak antara dua bunyi kuat yang berturutan,x dan frekuensi bunyi, f dikaitkan oleh formula:

x = vD whereaf di mana

a= distance between two loud speakersjarak antara dua pembesar suara

D= distance between the loud speakers and to where xis measured.jarak antara pembesar suara dengan mana x diukur

v= speed of soundlaju bunyi

(i) Calculate the gradient of the graphShow on the graph, how you calculate the gradient.Hitung kecerunan graf.Tunjukkan pada graf, bagaimana anda menghitung kecerunan.

m = ..............................[3 marks]

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(ii) Based on the relationship given in 2(b) and your answer in 2b(i), determine thespeed, v, of sound in air if D = 2.1 m and a = 1.0 m.Berdasarkan hubungan yang diberi pada 2(b) dan jawapan anda dalam 2b(i), tentukanlaju, v, gelombang bunyi dalam udara jika D = 2.1 m dan a = 1.0 m

V = ....................................

[4 marks]

(c) State one precaution that should be taken in this experiment.Nyatakansatu langkah berjaga-jaga yang perlu diambil dalam eksperimen ini.

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

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

[1 mark]

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Section BBAHAGIAN B

12 marks12 markah

Answer anyonequestion in this section.Jawab salahsatusoalan dalam bahagian ini.

Suggested time for this section is 30 minutes.Masa yang dicadangkan untuk menjawab bahagian ini ialah 30 minit.

3. Diagram 3.1 shows a boy riding his bicycle along a dirt track. When the boy goesover a low hillock, he comes down slowly.Diagram 3.2 shows the same boy coming down a high hillock along the track. Thetrack is much steeper causing him to come down very fast.

Rajah 3.1 menunjukkan seorang budak lelaki sedang menunggang basikalnya di sepanjangsatu trek tanah. Apabila budak itu melalui satu timbunan tanah yang rendah, dia menurunitimbunan itu dengan perlahan.Rajah 3.2 menunjukkan budak lelaki yang sama menuruni satu timbunan tanah yang tinggipada trek tersebut. Trek itu adalah lebih curam dan menyebabkannya bergerak turun denganlaju.

Based on the situation above:Berdasarkan situasi di atas:

(a) make one suitable inference [1 mark]bentukkan suatu inferens yang sesuai

(b) state an appropriate hypothesis that could be investigated [1 mark]nyatakan suatu hipotesis yang sesuai untuk penyiasatan

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Diagram 3.1[Rajah 3.1]

Diagram 3.2[Rajah 3.2]


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(c) With the use of apparatus such as trolley, ticker timer, ticker tape and other suitableapparatus, design an experiment to test the hypothesis.In your description, state clearly the following;Dengan menggunakan radas seperti troli, jangka masa detik, pita detik dan peralatan lainyang sesuai, rangkakan suatu eksperimen yang sesuai untuk menguji hipotesis.

Dalam penjelasan anda, nyatakan dengan jelas;

(i) aim of the experimenttujuan eksperimen

(ii) variables in the experimentpembolehubah eksperimen

(iii) list of apparatus and materialssenarai peralatan dan bahan

(iv) arrangement of the apparatussusunan radas

(v) the procedure of the experiment, including the method of controlling themanipulated variable and the method of measuring the responding variableprosedur eksperimen, termasuk cara mengawal pembolehubah dimanipulasikan dancara mengukur pembolehubah bergerakbalas

(vi) the way you would tabulate the data, andcara menjadualkan data, dan

(vii) the way you would analyse the datacara menganalisis data

[10 marks]

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4. Diagram 4.1 and Diagram 4.2 show an electrical device. The bulb in Diagram 4.2 seemsto be brighter than the bulb in Diagram 4.1Rajah 4.1 dan 4.2 menunjukkan sebuah peranti elektrik. Mentol pada Rajah 4.2 kelihatan lebihterang daripada mentol pada Rajah 4.1.

Based on the above observation and your knowledge on electromagnetism;Berdasarkan pemerhatian di atas dan pengetahuan anda mengenai keelektromagnetan:

(a) make one suitable inferencebentukkan suatu inferens yang sesuai

[1 mark]

(b) state an appropriate hypothesis that could be investigatednyatakan suatu hipotesis yang sesuai untuk penyiasatan

[1 mark]

mentol

BulbMentol


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240 V alternating currentArus ulangalik 240 V

mentol

BulbMentol


240 V alternating currentArus ulangalik 240 V


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(c) With the use of apparatus such as laminated soft iron core, coils and other suitable

apparatus, design an experiment to test the hypothesis,In your description, state clearly the following:Dengan menggunakan radas seperti teras besi lembut berlamina, gegelung wayar danperalatan lain yang sesuai, rangkakan suatu eksperimen yang sesuai untuk mengujihipotesis,.

Dalam penjelasan anda, nyatakan dengan jelas:

(i) aim of the experimenttujuan eksperimen

(ii) variables in the experimentpembolehubah eksperimen

(iii) list of apparatus and materialssenarai peralatan dan bahan

(iv) arrangement of the apparatussusunan radas

(v) the procedure of the experiment, including the method of controlling themanipulated variable and the method of measuring the responding variableprosedur eksperimen, termasuk cara mengawal pembolehubah dimanipulasikan dancara mengukur pembolehubah bergerakbalas

(vi) the way you would tabulate the data, andcara menjadualkan data, dan

(vii) the way you would analyse the datacara menganalisis data

[10 marks]

END OF QUESTION PAPERKERTAS SOALAN TAMAT

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Trial Sgor Phy p3 2008

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