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CONFIDENTIAL 1511/2 SULIT (c) If the wave has a velocity of 2 x 10 ms -1 , calculate its wavelength. [ velocity of wave = Frequency X wavelength] Kira panjang gelombang jika halajunya 2 x 10 ms -1 . [ halaju gelombang = Frekuensi X jarak gelombang ] (d) Table below shows the electromagnetic spectrum. Jadual di bawah menunjukkan spektrum gelombang elektromagnet. [2 marks] [ 2 markah ] P : ………………….. infrared Q : ……………….. UV rays x-ray gamma State P and Q in the spaces provided. Nyatakan P dan Q di ruangan yang disediakan. [2 marks] [ 2 markah] 1511/2 Hak Cipta Zon A Kuching 2008 18 LIHAT SEBELAH
CONFIDENTIAL 1511/2 SULIT Section C Bahagian C [ 20 marks] [20 markah] Answer question 10 and either question 11 or question 12. Jawab soalan 10 dan pilih sama ada soalan 11 atau soalan 12. 10. Study the statement below. Kaji pernyataan di bawah. Two spectacles that use convex lenses are compared. The spectacles with thicker lenses have a shorter focal length as compared with the spectacles with thinner lenses. Dua pasang cermin mata yang menggunakan kanta cembung dibandingkan. Cermin mata dengan kanta tebal menunjukkan jarak fokus yang pendek jika dibandingkan dengan cermin mata yang mempunyai kanta nipis. (a) (b) Suggest a suitable hypothesis to investigate this statement. Cadangkan hipotesis yang sesuai untuk menyiasat pernyataan ini. [ 1 mark ] [ 1 markah] You are given two convex lenses of different thickness. Describe one experiment which you can do in the laboratory to test your hypothesis. Your description should contain the following. Anda diberi dua kanta cembung yang berlainan ketebalan. Huraikan satu eksperimen yang boleh dilakukan dalam makmal untuk menguji hipotesis anda. Huraian anda perlu mengandungi perkara- perkara berikut. (i) Aim of experiment [1 mark] Tujuan eksperimen [ 1 markah] (ii) Identification of variables [2 marks] Mengenalpasti pemboleh ubah [ 2 markah ] (iii) List of apparatus and materials [1 mark] Senarai radas dan bahan [ 1 markah ] (iv) Procedures [3 marks] Kaedah [ 3 markah ] (v) Tabulation of data [1 mark] Penjadualan data [ 1 markah] (vi) Conclusion [1 mark] Kesimpulan [ 1 markah] 1511/2 Hak Cipta Zon A Kuching 2008 19 LIHAT SEBELAH
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