LATIHAN TITIAN CEMERLANGCHAPTER 1: INTRODUCTION TO PHYSICS

1 Diagram 1.1 shows an electrical measuring instrument.Rajah 1.1 menunjukkan sebuah alat pengukur elektrik.

Diagram 1.1 / Rajah 1.1(a) (i) What is the physical quantity measured by this instrument?Apakah kuantiti fizik yang diukur oleh alat ini?…...................................................................................................................... (ii) Name the error found on this instrument.Namakan ralat yang terdapat pada alat ini.…......................................................................................................................(b) Diagram 1.2 shows two instruments, X and Y, that can be used to measure the thickness of a wire.Rajah 1.2 menunjukkan dua alat pengukur, X dan Y, yang boleh digunakan untuk menentukan ketebalan seutas dawai.

Kedah : Paper 2

[1 mark]

[1 mark]

1

Diagram 1.2 / Rajah 1.2(i) Which instrument is more suitable to measure the thickness of the wire? Alat pengukur yang manakah lebih sesuai untuk mengukur ketebalan dawai itu?…...................................................................................................................... (ii) State one reason for your answer in 1(b)(i).Nyatakan satu sebab bagi jawapan anda di 1(b)(i).…......................................................................................................................…......................................................................................................................

[1 mark]

[1 mark]

1. Diagram 1.1 shows the reading of a measuring instrument when there is no object on it.

Rajah 1.1 menunjukkan bacaan satu alat pengukur apabila tiada objek diletakkan diatas

nya.Diagram 1.2 shows the reading of the measuring instrument when an object is

placed on it.Rajah 1.2 menunjukkan bacaan alat pengukur tersebut apabila satu objek

diletakkan diatasnya.

Diagram 1.1 Rajah 1.1

Kelantan: Paper 2

2

Diagram 1.2 Rajah 1.2

(a) Name the physics quantity that can be measured by the measuring instrument in Diagram 1.1.

Namakan kuantiti fizik yang boleh diukur oleh alat pengukur pada Rajah 1.1....………………………………………………………………………………………. (b) Name the type of error produced in Diagram 1.1Namakan jenis ralat yang terhasil dalam rajah 1.1...……………………………………………………………………………………….. (c) What is the value of error in Diagram 1.1Berapakah nilai ralat yang terhasil dalam rajah 1.1...……………………………………………………………………………………….. (d) What is the actual reading of the physical quantity measured in Diagram

1.2?Berapakah bacaan sebenar kuantiti fizik yang diukur dalam Rajah 1.2?...………………………………………………………………………………………..

[1 mark]

[1 mark]

[1 mark]

[1 mark]

1. A student carries out an experiment to investigate the relationship between thelength , l of a piece of wire X placed at the cut A of cardboard strip and the angle , θ.The apparatus set-up for this experiment is shown in Diagram 1.1 and 1.2.Seorang murid menjalankan satu eksperimen untuk mengkaji hubungan antara panjang, lseutas wayar X yang diletakkan pada sekeping potongan kadbod di A dengan sudut, θ.Susunan alat radas bagi eksperimen ini ditunjukkan pada rajah 1.1 dan 1.2.

SBP: Paper 3

3

Diagram 1.1 Diagram 1.2

The student starts the experiment with the length, l of a piece of wire X that is50.0 cm. The corresponding reading of protractor is shown in Diagram 1.3 on page 3.The experiment is repeated with length, l of wire 40.0 cm, 30.0 cm, 20.0 cm and 10.0cm. The corresponding readings of protractor are shown in Diagram 1.4, 1.5, 1.6 and1.7 on pages 3, 4 and 5.Murid itu memulakan eksperimen dengan panjang, l seurat wayar X 50.0 cm. Bacaanjangkasudut yang sepadan yang sepadan ditunjukkan pada rajah 1.3 dihalaman 3.Eksperimen diulangi dengan mengunakan panjang, l = 40.0 cm, 30.0 cm, 20.0 cm dan 10.0cm. Bacaan jangkasudut yang sepadan dihalaman 3, 4 dan 5.

Diagram 1.3

4

Diagram 1.4

Diagram 1.5

Diagram 1.6

5

Diagram 1.7

For the experiment describe on page 2, identifyBagi eksperimen yang diterangkan di halaman 2, kenalpasti

(i) the manipulated variablePembolehubah dimanipulasi………………………………………………………………………………. (ii) the responding variablePembolehubah bergerak balas……………………………………………………………………………… (iii) the constant variablePembolehubah yang dimalarkan………………………………………………………………………………. (b) For this part of question, write your answers in the spaces provided in thecorresponding diagrams.Untuk bahagian soalan ini, tulis jawapan anda diruang yang disediakan dalam rajahrajahyang sepadan.Based on Diagram 1.3, 1.4, 1.5, 1.6 and 1.7 on pages 3, 4 and 5.Berdasarkan rajah 1.3, 1.4, 1.5, 1.6 dan 1.7 di halaman 3, 4 dan 5.(i) Record the reading of protractor in the space provided on pages 3, 4 and 5.Catat bacaan bagi jangka sudut diruangan yang telah disediakan pada mukasurat 3,4 dan 5.

(ii) Tabulate your results for all values of l and θ in the space given below.Jadualkan keputusan anda bagi semua nilai l dan θ dalam ruang di bawah.

(c) On the graph paper on page 8, plot a graph of θ against l.Pada kertas graf di halaman 8, lukis graf θ melawan l.

[ 1 mark ]

[ 1 mark ]

[ 1 mark ]

[2 marks]

[4 marks ]

6

[Sila gunakan kertas graf sendiri] (d) Based on your graph in 1 (c), state the relationship between θ and l.Berdasarkan graf di 1 (c), nyatakan hubungan diantara θ dan l.……………………………………………………………………………………… (e) State one precaution that should be taken to improve the result of this experiment.Nyatakan satu langkah berjaga-jaga yang perlu diambil untuk memperbaiki keputusaneksperimen ini.………………………………………………………………………………………………………………………………………………………………………………

ANSWERS

Kedah : Paper 2

1 (a) (i) State the physical quantity correctly 1- Voltage/potential difference(ii) State the error correctly 1- Zero error//systematic error(b) (i) State the instrument correctly 1- Y/micrometer

[5 marks ]

[1 mark]

[1 mark]

7

(ii) State the reason correctly 1- The scale has a smaller division

Kelantan: Paper 2

1. (a) mass (b) Zero error (c) 6 g (d) 24 g

SBP: Paper 3

1(a) (i) Manipulated variable = The length, l of the wire X (a)(ii) Responding variable = The angle, θ (a)(iii) Constant variable = The distance from A to the needle // the diameterof the wire //the material of wire X

(b)(i) Values of θ are correct(All values are correct : 2M)(One value incorrect : 1M)

(ii)Tabulate l and θ correctly in the table.A Shows a table which have l , and θB State the correct unit of l /cm and θ /°C All values of l are correctD Values of l and θ are consistent

(c) Draw the graph of θ against l .A - Label y-axis and x-axis correctlyB - States the unit at the axis correctlyC - Both axes with the even and uniform scale:D - 5 points correctly plotted:E - a smooth best straight lineF - minimum size of the graph is 5 x 4 squares of 2 x 2 cm.

(d) State the correct relationship based on the candidate’s graphl is directly propotional to θ // l is increasing linearly to θ

(e) 1- The eye’s of observer must be perpendicular to the scale reading inorder to avoid the parallax error.2- Repeat the experiment and find the average.

8

9