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SULIT 4531/3
1
Section A
[ 28 marks]
Answer all questions Jawab semua soalan
Answer all questions in this section. Suggested time to answer this section is 60 minutes. Jawab semua soalan dalam bahagian ini. Masa yang dicadangkan untuk menjawab bahagian ini ialah
60 minit.
1 A student carries out an experiment to investigate the relationship between the object
distance, u and the image distance, v, of a convex lens with focal length, f,. The apparatus is
set up as shown in Diagram 1.1 Seorang pelajar menjalankan satu eksperimen untuk mengkaji hubungan antara jarak objek, u dan
jarak imej, v bagi kanta cembung yang mempunyai panjang fokus, f. Radas disediakan seperti
Rajah 1.1.
The object distance is fixed at u = 34 cm, 30 cm, 26 cm, 20 cm and 16 cm. The convex lens
is placed at the “zero” mark on the scale of the metre rule when the image distance, v, is
measured. Jarak objek ditetapkan pada u = 34 cm, 30 cm, 26 cm, 20 cm dan 16 cm. Kanta cembung diletakkan
pada kedudukan “sifar” di pembaris meter apabila jarak imej, v, diukur.
DIAGRAM 1.1
RAJAH 1.1
Convex lens
Kanta cembung Light bulb
mentol
Sharp image
Imej tajam
screen
skrin
Metre rule
Pembaris meter
SULIT 4531/3
2
Diagram 1.2, 1.3, 1.4, 1.5 and 1.6 showed the end part of metre rule when the image
distance, v, is measured.
Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6 menunjukkan bahagian akhir pembaris meter semasa
jarak imej,v , diukur.
Imej
Skrin
DIAGRAM 1.2: Object distance,u= 34 cm
RAJAH 1.2. Jarak objek, u = 34 cm
Imej
Skrin
DIAGRAM 1.3: Object distance,u= 30 cm
RAJAH 1.3: Jarak objek, u = 30 cm
SULIT 4531/3
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Imej
Skrin
DIAGRAM 1.4: Object distance,u = 26 cm
RAJAH 1.4: Jarak objek, u = 26 cm
Imej
Skrin
DIAGRAM 1.5: Object distance,u = 20 cm
RAJAH 1.5. Jarak objek, u = 20 cm
Imej
Skrin
DIAGRAM 1.6: Object distance,u = 16 cm
RAJAH 1.6. Jarak objek, u = 16 cm
SULIT 4531/3
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(a) For the experiment described above, identify: Daripada penerangan eksperimen di atas, kenalpasti:
(i) The manipulated variable Pembolehubah manipulasi
………………………………………………………………………………………
[1 mark / markah]
(ii) The responding variable Pembolehubah bergerakbalas
………………………………………………………………………………………
[1 mark / markah]
(iii) The constant variable Pembolehubah dimalarkan
………………………………………………………………………………………
[1 mark / markah]
(b) Based on diagram 1.2, 1.3, 1.4, 1.5 and 1.6, determine the magnitude of v, u
1 and
v
1,
when u is equal to 34.0 cm, 30.0 cm, 26.0 cm, 20.0 cm and 16.0 cm.
Berdasarkan Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6 tentukan nilai v, u
1 dan
v
1, apabila u ialah
34.0 cm, 30.0 cm, 26.0 cm, 20.0 cm dan 16.0 cm.
Tabulate the values of u, v, u
1 and
v
1 in the space below.
Jadualkan nilai-nilai bagi u, v,u
1 dan
v
1 pada ruangan di bawah.
[7 marks / markah]
SULIT 4531/3
5
(c) On the graph paper, plot a graph of v
1 against
u
1.
[5 marks / markah]
(d) Based on your graph, state the relationship between v
1 and
u
1.
…………………………………………………………………………………………...
[1 mark / markah]
Hafiz carried out an experiment to investigate the relationship between the terminal voltage, V,
and the current flows, I using an ammeter, a rheostat and a voltmeter. .
Diagram 2.1 / Rajah 2.1
Graph of V against I Graf V melawan I
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0.2 0.4 0.6 0.8 1.0 Current / A Arus / A
1.2
Voltage / V Voltan / V
SULIT 4531/3
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The results of the experiment is shown in graph of V against I as shown in Diagram 2.1. Keputusan eksperimen ditunjukkan dalam graf V melawan I seperti ditunjukkan dalam
Rajah 2.1.
(a) Based on the graph in Diagram 2.1, Berdasarkan graf dalam Rajah 2.1,
(i) What happens to the value of V, as the current flow, I, increases?
Apakah yang akan berlaku terhadap nilai V, jika arus yang mengalir bertambah?
…………………………………………………………………………………………………... [1 mark / markah]
(ii) Determine the value of V when I = 0. Show on the graph, how you determine
the value of V. Tentukan nilai V apabila I = 0. Tunjukkan di atas graf bagaimana anda menentukan
nilai V.
V = …………………..
[2 marks / markah]
(b) The magnitude of the gradient of the graph represents the internal resistance of the
battery, r. State how the internal resistance varies with current. Magnitud kecerunan graf itu mewakili rintangan dalam sel itu, r. Nyatakan bagaiamana
rintangan berubah dengan arus
………………………………………………………………………………………………...
[1 mark / markah]
(c) Calculate the magnitude of the gradient of the graph, r. Show on the graph how you
determine value of r. Kirakan kecerunan graf, r. Tunjukkan di atas graf bagaimana nilai r ditentukan
r =……………………………………
[3 marks / markah]
(d) The electromotive force, E of the battery is given by the formula V = - Ir + E where
r is the magnitude of the gradient of the graph, V and I are the corresponding
voltage and current.
SULIT 4531/3
7
Daya gerak elektrik bateri itu, E, ditakrifkan sebagai V = - Ir + E di mana r ialah
magnitud kecerunan graf itu, V dan I ialah Voltan dan arus yang sepadan.
Calculate the electromotive force, E of the battery when I = 0.40 A Kirakan daya gerak elektrik bateri itu, E apabila I = 0.40 A
E = ..................................................
[2 marks / markah]
(e) The experiment is then repeated using another battery of electromotive force,
E = 6.0 V. When the electric current, I is set to 0.5 A, the voltmeter shows a reading
of 4.0 V.
Calculate the internal resistance, r of the battery. Eksperimen itu kemudiannya diulang menggunakan suatu bateri yang lain dengan daya
gerak elektrik, E = 6.0 V. Apabila arus elektrik, I ditetapkan kepada 0.5 A, voltmeter
menunjukkan bacaan 4.0 V.
Hitung rintangan dalam, r bagi bateri tersebut.
[2 marks / markah]
(f) State one precaution that should be taken to improve the results of the experiment. Nyatakan satu langkah berjaga-jaga yang perlu diambil untuk memperbaiki keputusan
eksperimen
………………………………………………………………………………………………...
………………………………………………………………………………………………...
[1 mark / markah]
SULIT 4531/3
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1. A student carries out an experiment to study the relationship between angle of incidence, i, and
the angle of refraction, r, of light ray. A semicircular glass block is put on a circular protractor.
A ray box is switched on to emit a single light ray onto the semicircular glass block. Both the
incident ray and the refracted ray are traced on the white paper. The arrangement of the
apparatus for the experiment is shown in
Figure 1.1.
Seorang pelajar menjalankan suatu eksperimen untuk mengkaji hubungan di antara sudut tuju, i, dan sudut
biasan, r, bagi sinar cahaya. Sebuah bongkah kaca separa bulat diletakkan di atas jangka sudut berbentuk
bulat. Sebuah kotak sinar dihidupkan untuk memancarkan sinar cahaya ke atas bongkah kaca separa bulat
itu. Kedua-dua sinar tuju dan sinar biasan dilukis di atas kertas putih. Susunan radas bagi eksperimen
tersebut ditunjukkan pada Rajah 1.1.
FIGURE 1.1 / RAJAH 1.1
The ray box is fixed at an angle of 20 from the normal. The refracted ray is traced on the paper and
the angle of refraction, r, is measured as shown in Figure 1.2.
Kotak sinar diletakkan pada suatu sudut 20 daripada normal. Sinar biasan yang terhasil kemudiannya
dilukis di atas kertas dan sudut biasan, r, diukur seperti ditunjukkan pada Rajah 1.2.
The experiment is repeated by using different angle of incidence, i, 30, 40, 50, and 60. The
corresponding angles of refraction, r, are shown in Figure 1.3, 1.4, 1.5 and 1.6.
Eksperimen tersebut diulangi dengan menggunakan sudut tuju, i, yang berlainan, 30, 40, 50, and 60.
Sudut-sudut biasan, r, yang sepadan ditunjukkan pada rajah-ajah 1.3, 1.4, 1.5 dan 1.6.
Ray box / Kotak sinar
Normal
Semicircular glass block Bongkah kaca separa bulat
White Paper Kertas putih
Incident ray / Sinar tuju
Refracted ray Sinar biasan
SULIT 4531/3
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Figure 1.2 / Rajah 1.2:
Angle of incidence / Sudut tuju, i = 20
Angle of refraction / Sudut biasan, r = …………..
Figure 1.3 / Rajah 1.3:
Angle of incidence / Sudut tuju, i = 30
Angle of refraction / Sudut biasan, r = …………..
SULIT 4531/3
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Figure 1.4 / Rajah 1.4:
Angle of incidence / Sudut tuju, i = 40
Angle of refraction / Sudut biasan, r = …………..
Figure 1.5 / Rajah 1.5:
Angle of incidence / Sudut tuju, i = 50
Angle of refraction / Sudut biasan, r = …………..
SULIT 4531/3
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(a) For the experiment described on page , identify
Bagi eksperimen yang dijelaskan pada muka surat 66, kenal pasti
(i) the manipulated variable,
pembolehubah dimanipulasi,
………………………………………………………………………………. [1 mark / markah]
(ii) the responding variable,
pembolehubah bergerak balas,
………………………………………………………………………………. [1 mark / markah]
(iii) a constant variable.
pembolehubah dimalarkan.
………………………………………………………………………………. [1 mark / markah]
Figure 1.6 / Rajah 1.6:
Angle of incidence / Sudut tuju, i = 60
Angle of refraction / Sudut biasan, r = …………..
SULIT 4531/3
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(b) Based on Figures 1.2, 1.3, 1.4, 1.5 and 1.6, determine r when i is equal to 20, 30, 40, 50 and
60.
Berdasarkan pada Rajah-rajah 1.2, 1.3, 1.4, 1.5 dan 1.6, tentukan r apabila i bersamaan dengan 20,
30, 40, 50 dan 60.
Tabulate your results for i, r, sin i, and sin r in the space below.
Jadualkan keputusan anda untuk i, r, sin i, dan sin r dalam ruangan di bawah.
[7 marks / markah]
(c) On a graph paper, plot a graph of sin r against sin i.
Di atas kertas graf, plotkan graf sin r melawan sin i.
[5 marks / markah]
(d) Use your graph to state the relationship between sin r and sin i.
Gunakan graf anda untuk menyatakan hubungan di antara sin r dan sin i.
…………………………………………………………………………………….. [1 mark / markah]
SULIT 4531/3
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2. A student carried out an experiment to find out the relationship between the terminal voltage, V,
and the electric current, I, and to determine the electromotive force, E and the internal resistance
of the cell. The student repeated the experiment at five different electric current. Seorang murid menjalankan suatu eksperimen untuk mengkaji hubungan antara voltan terminal, V, dan arus
elektrik, I, dan untuk menentukan daya gerak elektrik, E, dan rintangan dalam bagi sebuah sel. Murid itu
mengulangi eksperimen tersebut dengan lima nilai arus elektrik yang berlainan.
The results of the experiment are shown on a graph of V against I as in Figure 2.1 Keputusan eksperimen itu ditunjukkan pada graf V melawan I seperti dalam Rajah 2.1
FIGURE 2.1 / Rajah 2.1 (a) Based on the graph in Figure 2.1,
V / V
I / A
Graph of V against I Graf V melawan I
0.6 0.1 0.2 0.3
0.4 0.5 0.7
0.25
0.50
0.75
1.00
1.25
1.50
1.75
SULIT 4531/3
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Berdasarkan graf dalam Rajah 2.1,
(i) state the relationship between V and I.
nyatakan hubungan antara V dan I.
………………………………………………………………………………
[ 1 mark /markah]
(ii) determine the terminal voltage, V when the electric current, I = 0.3 A.
Show on the graph, how you determine V.
tentukan voltan terminal, V, apabila arus elektrik, I = 0.3 A
Tunjukkan pada graf, bagaimana anda menentukan V.
V = ……………………. V
[2 marks/markah ]
(b) The electromotive force, E is given by the intercept of V-axis of the graph V against I.
Determine the electromotive force of the cell.
Show on the graph, how you determine E.
Daya gerak elektrik, E, diberikan oleh pintasan di paksi-V bagi graf V melawan I. Tentukan
daya gerak elektrik bagi sel itu.
Tunjukkan pada graf, bagaimana anda menentukan E.
E = ……………………. V
[2 marks/markah]
(c) The internal resistance, r is given by the following equation:
Rintangan dalam, r, diberikan oleh persamaan berikut:
r = -m
where m is the gradient of the graph V against I.
di mana m adalah kecerunan bagi graf V melawan I.
(i) Determine the gradient of the graph V against I.
Show on the graph how you determine the gradient, m.
Tentukan kecerunan bagi graf V melawan I.
Tunjukkan pada graf, bagaimana anda menentukan kecerunan, m, tersebut.
m = ………………………….
SULIT 4531/3
15
[ 3 marks/markah]
(ii) Hence, determine the internal resistance, r.
Maka, tentukan rintangan dalam, r.
r = ……………………………
[ 1 mark/markah]
(d) The experiment is repeated using a different cell of internal resistance, r = 1.6 Ω.
When the electric current is adjusted to 0.5 A, the terminal voltage obtained is 1.2 V.
Calculate the electromotive force, E’ of the cell.
Eksperimen itu diulangi menggunakan sebuah sel lain yang mempunyai rintangan dalam, r =
1.6 Ω. Apabila arus elektrik dilaraskan kepada 0.5 A, voltan terminal yang diperolehi adalah
1.2 V.
Hitung daya gerak elektrik, E’ bagi sel tersebut.
E’ = ……………………………
[ 2 marks/markah]
(e) State one precaution that should be taken during the experiment.
Nyatakan satu langkah berjaga-jaga yang perlu diambil sepanjang eksperimen itu.
……………………………………………………………………………………………………
………………………………………….…………………………………………………………
……………………………………………………………………….
[ 1 mark/markah]
SULIT 4531/3
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Diagram 3.1 shows a mineral bottle is placed at the surface under a swimming pool. Diagram 3.2
shows a same size of mineral bottle been placed deep under into the swimming pool. The mineral
bottle suddenly crumple at the base of the swimming pool.
Diagram 3.1 / Rajah 3.1 Diagram 3.2
Based on your observation on the condition of the mineral bottle ;
(a) State one suitable inference,
[1 mark]
(b) State one appropriate hypothesis that could be investigated,
(c ) With use of apparatus such as a thistle funnel, a manometer and other
apparatus, describe an experiment to investigate the hypothesis stated in 3(b)
3. Diagram 3 shows two similar catapults A and B which are applied with the force of 10 N
and 20 N respectively. Rajah 3 menunjukkan dua buah lastik A dan B yang serupa, masing-masing dikenakan dengan
daya 10 N dan 20 N.
Diagram 3 / Rajah 3
c) With the use of apparatus such as spring, retort stand and the other apparatus, describe an
experimental framework to investigate the hypothesis stated in 3(b).
Catapult A / Lastik A Catapult B / Lastik B