Page 86 - MODUL SPEKTRUM FIZIK SPM

(a) What is alpha particle?
Apakah zarah alfa?
[1 mark / 1 markah]

(b) Based on Table 1.1 and Diagram 1.2,
Berdasarkan Jadual 1.1 dan Rajah 1.2,
(i) Compare the mass, the speed and the range in air for alpha particle, beta particle and
gamma ray.
Bandingkan jisim, kelajuan dan julat di dalam udara bagi zarah alfa, zarah beta dan sinar
gama.
[3 marks / 3 markah]
(ii) State the relationship between
Nyatakan hubungan antara
- the mass and the range in air of particles and ray
jisim dan julat dalam udara bagi zarah-zarah dan sinar.
- the speed and the penetrating power of particles and ray.
kelajuan dan kuasa penembusan bagi zarah-zarah dan sinar.
[2 marks / 2 markah]

2. Diagram 2.1 and Diagram 2.2 show the rate of radioactive decay for Xenon-133 and
Iodine-131 respectively.
Rajah 2.1 dan Rajah 2.2 masing-masing menunjukkan kadar pereputan radioaktif bagi
Xenon-133 dan Iodin-131.

(a) What is the meaning of radioactive decay?
Apakah maksud pereputan radioaktif?
[1 mark / 1 markah]
(b) Based on Diagram 2.1 and Diagram 2.2, compare the shape of the graphs, the way the activity
changes with time and the time taken for the activity to become half of the original activity. Name
the time for the activity to become half of the original activity.
Berdasarkan Rajah 2.1 dan Rajah 2.2, bandingkan bentuk graf, cara aktiviti berubah mengikut
masa dan masa yang diambil untuk aktiviti menjadi separuh daripada aktiviti asal. Namakan masa
untuk aktiviti menjadi separuh daripada aktiviti asal.
[5 marks / 5 markah]

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