5.2 Separuh Hayat
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Medium
Cg Khairani Moe
Used 100+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Aktiviti sampel X menjadi 6.25% daripada nilai asal selepas 120 minit. Berapakah separuh hayatnya?
30 minit
40 minit
60 minit
120 minir
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Alat pengesan radioaktif manakah yang tidak sesuai untuk mengesan sinar gama?
Pembilang bunga api
Tiub Geiger-Muller
Filem fotografi
Kebuk awan
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berapakah jisim Natrium-24 yang belum mereput selepas 45 jam?
12.0 g
9.0 g
6.0 g
4.5 g
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berdasarkan lengkung pereputan suatu sampel radioaktif, berapakah setengah hayat sampel itu?
4 minit
6 minit
8 minit
10 minit
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Natrium-24 mempunyai separuh hayat 15 jam. Berapa banyakkah Natrium-24 yang telah mereput dalam sampel 180 g selepas 60 jam?
5.62 g
11.25 g
168.75 g
174.38 g
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Setengah hayat suatu jenis bahan radioaktif ialah 5 jam. Satu sampel diuji dan ia mengandungi 45.0 g bahan tersebut.
Berapa banyakkah bahan radioaktif dalam sampel tersebut 15 jam sebelum sampel itu diuji?
5.62 g
11.25 g
180.0 g
360.0 g
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jisim awal suatu unsur radioaktif ialah 15 g dan separuh hayatnya ialah 7 hari.
Pernyataan manakah yang betul tentang jisim unsur radioaktif itu?
7 hari sebelum, jisimnya ialah 30 g
14 hari sebelum, jisimnya ialah 120 g
7 hari sebelum, jisimnya ialah 60 g
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