k2 1,2,3-1.doc
TRANSCRIPT
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Maklumat berikut mungkin berfaedah (simbol-simbol mempunyai makna yang biasa)
1. a = 16.
2. v2 = u2 + 2as 17.
3. s = ut + at2
4. Momentum = mv18. +
5. F = ma19. Linear magnification /
Pembesaran linear,
6. Kinetic energy / Tenaga Kinetik
= 20. v = f
7. Gravitational potential energy / Tenaga Keupayaan graviti = mgh 21. =
8. Elastic potential energy /
Tenaga keupayaan kenyal = Fx 22. Q = It
9. Power, 23. E = VQ
Kuasa, 24. V = IR
10. = 25. Power / Kuasa, P = IV
11. Pressure / Tekanan, P = 26. g = 10 ms-2
12. Pressure / Tekanan, P = h g 27.
13. Heat / Haba, Q = mc 28. Efficiency / Kecekapan
14. Heat / Haba, Q = ml =
15. = constant / pemalar
29. E = mc2
Section A
Bahagian A
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Answer all the questions / Jawab semua soalan
1 Diagram 1 shows light rays parallel with the principal axis directed to a concave mirror.
Rajah 1 menunjukkan cahaya selari dengan paksi utama di arahkan ke cermin cekung
a) Complete the sentence below by ticking (√) the correct box.
Sempurnakan ayat di bawah dengan membuat tandaan (√) pada kotak yang betul
The light rays reflected by the mirror will
Cahaya dipantulkan oleh cermin akan
Converge at a focus point (F)
Mencapah pada titik fokus (F)
Diverge from a focus point (F)
Menumpu pada titik focus (F)
[ 1 mark / 1 markah]
b) Complete the ray diagram on Diagram 1 and mark “F” on the principal axis
Concave mirror / Cermin cekung
Diagram 1 / Rajah 1
Principal axis
Paksi utama
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Lengkapkan rajah sinar pada Rajah 1 dan tandakan “F” pada paksi utamanya
[2 marks / 2 markah]
c) What is the characteristic of image formed by the mirror in Diagram 1.
Apakah ciri-ciri imej yang terhasil pada rajah 1.
[1mark / 1 markah]
2.
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Two solid materials both with the same mass 800 g are heated up with a heater of 1000 W.
Dua bahan pepejal mempunyai jisim yang sama 800 g dipanaskan dengan pemanas 1000 W.
a) What is the meaning of the melting point of a material?
Apakah maksud takat lebur suatu bahan.
……………………………………………………………………………............................
[1 mark] / [ 1 markah]
b) Based on the graph above, compare
Berdasarkan graf di atas, bandingkan
i. the specific heat capacity of both materials Y and Z.
muatan haba tentu kedua- dua bahan Y dan Z.
…………...……………………………………………………………………………
[1 mark] / [ I markah]
c) i. State the melting points of Y and Z
Nyatakan takat lebur bahan Y dan Z
………………………………………………..
…………………………….................
[1 mark ] / [1 markah ]
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ii) Calculate the specific latent heat of Z
Hitung haba pendam tentu pelakuran Z.
[ 2 marks ] / [2 markah ]
3. Diagram 3.1 shows a pendulum bob of mass 0.6 kg is hung on the ceiling.
Rajah 3.1 menunjukkan sebuah ladung berjisim 0.6 kg digantung kepada siling.
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Diagram 3.1
Rajah 3.1
a) In the Diagram 3.1, mark the direction and label the forces acting on the thread and the
pendulum bob with label P and Q.
Pada Rajah 3.1 tandakan arah dan labelkan daya-daya yang bertindak kepada benang
dan ladung dengan label P dan Q.
[2 marks] / [2 markah ]
b) The thread is pulled sideway by a force F, so that the thread makes an angle of 300 with the
vertical line as shown in Diagram 3.2
Benang itu di tarik ke satu sisi dengan daya F supaya benang itu membuat sudut 300
dengan garis tegak seperti dalam Rajah 3.2
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Diagram 3.2
Rajah 3.2
i. In the space below, draw the triangle of forces to show the three forces P, Q and F are
in equilibrium.
Pada ruang di bawah, lukis rajah segitiga daya untuk menunjukkan tiga daya P, Q
dan F dalam keseimbangan.
[2 marks] / [2 markah ]
ii. Calculate the force F / Hitung daya F
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[2 marks] / [ 2 markah]