Section A

Bahagian A

[ 28 marks] [28 markah]

Answer all questions in this section

Jawab semua soalan dalam bahagian ini.

1. A student carries out an experiment to study the relationship between the speed of trolley, v and the

height of the trolley on the inclined plane from the surface, h. The arrangement of apparatus is

shown in Diagram 1.1. The frequency of the ticker timer is 50 Hz. The height of the trolley on the inclined plane from the surface, h = the height of the block.

Seorang pelajar menjalankan satu eksperimen untuk mengkaji hubungan antara halaju troli, v dan

ketinggian troli di atas landasan condong daripada permukaan lantai, h. Susunan radas eksperimen

seperti yang ditunjukkan pada Rajah 1.1. Frekuensi jangka masa detik ialah 50 Hz. Ketinggian troli di atas landasan condong daripada permukaan lantai, h = ketinggian tinggi bongkah.

Diagram 1.1 Rajah 1.1

At the beginning of the experiment, the height of the block is started with h = 20.0 cm. 10

ticks is chosen from the centre of the ticker tape to calculate the speed as shown in Diagram

1.2. The experiment is repeated by varying the values of h to be 30.0 cm, 40.0 cm, 50.0 cm

and 60.0 cm. Every section of 10 ticks at the centre of ticker tape can be obtained as shown

in Diagram 1.3, 1.4, 1.5 and 1.6. Pada awal eksperimen tinggi bongkah h dimulai dengan 20.0 cm. 10 detik dipilih daripada bahagian

tengah pita detik untuk menghitung halaju seperti yang ditunjukkan di Rajah 1.2. Eksperimen diulangi

dengan menggunakan ketinggian bongkah h = 30.0 cm, 40.0 cm, 50.0 cm dan 60.0 cm. Keratan 10

detik pada bahagian tengah pita detik yang diperolehi ditunjukkan seperti pada Rajah 1.3, 1.4, 1.5 dan

1.6. 4531/3 SULIT

4

Diagram 1.2 Diagram 1.3 Diagram 1.4 Rajah 1.2 Rajah 1.3 Rajah 1.4

h = 20.0 cm h = 30.0 cm h = 40.0 cm

s1 = ….….. cm s2 = ….….. cm s3 = ….….. cm

v1 = ………cm s-1

v2 = ………cm s-1

v3 = ………cm s-1

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5

Diagram 1.5 Diagram 1.6 Rajah 1.5 Rajah 1.6

h = 50.0 cm h = 60.0 cm

s4 = ….….. cm s5 = ….….. cm

v4 = ………cm s-1

v5 = ………cm s-1

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1(a)(i)

1(a)(ii)

1(a)(iii) 1(b)(i) 1(b)(ii)

6 (a) For the experiment described on page 3, identify

Bagi eksperimen yang diterangkan di halaman 3, kenal pasti ;

(i) The manipulated variable, pembolehubah

yang dimanipulasikan,

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

. [1 mark]

[1 markah] (ii) The responding variable

pembolehubah bergerak balas,

……………………………………………………………………………..

[1 mark]

[1 markah] (iii) A fixed variable, pembolehubah

yang dimalarkan,

……………………………………………………………………………

[1 mark]

[1 markah]

(b) For this part of the question, write your answers in the spaces provided in

the corresponding diagrams. Untuk bahagian soalan ini, tulis jawapan anda dalam ruang yang disediakan

dalam rajah-rajah yang sepadan.

(i) Based on Diagrams 1.2, 1.3, 1.4, 1.5 and 1.6 on pages 4 and 5, record

the readings of s . Berdasarkan Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6 di halaman 4 dan 5, catat

bacaan s [2 marks]

[2 markah]

(ii) Calculate v for each value of s in 1(b)(i), using the formula

Record the value of v.

Hitung v bagi setiap nilai s di 1(b)(i), menggunakan formula

Catat nilai v.

[2 marks]

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7 (c) Tabulate your results for all values of h, s and v in the space below.

Jadualkan keputusan anda bagi semua nilai h, s dan v dalam ruang di bawah. [2

marks] [2 markah]

(d) On the graph paper on page 5, draw a graph of v against h.

Pada kertas graf di halaman 5, lukiskan graf v melawan h. [5 marks] [5 markah]

(e) Based on the graph on page 5, state the relationship between v and h.

Berdasarkan graf anda di halaman 5, nyatakan hubungan antara v dan h

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

[1 mark] [1 markah]

(f) State one precaution in this experiment.

Nyatakan satu langkah berjaga-jaga dalam eksperimen ini

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

. [1 mark]

[1markah]

1(c)

1(d)

1(e)

1(f)

Total A1

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8 Graph of v against h

Graf v melawan h

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9 2. A student carries out an experiment to investigate the relationship between

angle of incidence,i and angle of refraction, r of a glass block.

The results of this experiment are shown in the graph sin r against sin i in

Diagram 2.1.

(a) Based on the graph in Diagram 2.1:

(i) State the relationship between sin r and sin i.

……………………………………………………………………

[1 mark]

(ii) Determine the value of i when sin r = 0.6.

Show on the graph, how you determine the value of i.

x = …………………. [3 marks]

(iii)Calculate the gradient, m. of the graph. Show on

the graph how you calculate m.

m = ……………………. [3 marks]

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10

Graph of sin r against sin i

Sin r

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0 0.2 0.4 0.6 0.8 1.0 Sin i

Diagram 2.1

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11 (b) The index of refraction, n, of the glass is given by the formula where

m is the gradient of the graph. Calculate the value of .

= …………………… [2 marks]

(c) The relationship between the speed of light in glass, v and the speed of

light in air, c, is ,

.

where n is the index of refraction of the glass.

The speed of light in air, c = 3 x 108 m s

-1. Using the answer in 2(b),

calculate the speed of light in glass.

v = ………………………………… [2 marks]

(d) State one precaution that should be taken to improve the accuracy of the

result of this experiment.

…………………………………………………………………………….

2(c) 2(d)

…………………………………………………………………………… [1 mark]

Tips for Paper 3 No 1 and No 2

1. Identity the variable from the text and diagram.

(a) Manipulated variable

(b) Responding variable

(c) Fixed variable (can be measured)

---NOT TYPE OF SUBSTANCE

(d) Observe the diagram measurement

(e) Identity the value in table

(f) Tabulate data with symbol and unit

(g) Plan your graph (unit and symbol)

(h) Determine the relationship from the graph

2. Read the question CAREFULLY

(a) Extrapolate the graph and write the value next to it

(b) Plot biggest triangle and get closest value with unit

(c) Substitute the value correctly with 2 decimal places

(d) Place precaution

Observe the reading perpendicular to the eyes to prevent

parallax errors

Off the circuit when measurement is not taken to prevent heating

of wires and cause systematic errors

Repeat the experiment for 3 times and determine the average to

prevent systematic error

Sample Paper 3

Questions no 1

a. Manometer measurement (pressure and height) (MRSM 2008)

b. Protractor (Refraction)

c. Interferens (measure distance of separation)(DIAGNOSTIK KL 2010)

Questions 2 (Graph)

a. Light of lenses (f

1=

v

1 +

u

1 )

b. Internal resistance ( negative graph)

c. Refractive index (sin i vs sin r)