6.1.6 Numerical Problems Related to half-life (M)

6.1.6 Numerical Problems Related to half-life (M)

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Question 1 of 8

1. Question
1 point(s)
Jadual menunjukkan rekod aktiviti sampel radioaktif dalam tempoh 90 minit. Apakah separuh hayat bahan radioaktif ini?
- 30
- 60
- 90
- 120
Correct

Incorrect
Question 2 of 8

2. Question
1 point(s)
Persamaan menunjukkan peluruhan unsur radioaktif X menjadi unsur Y (yang tidak radioaktif). Jika jisim awal X adalah 40g, tentukan jisim X dan Y selepas 1 jam. [Separuh hayat X adalah 15 minit]
- A
- B
- C
- D
Correct

Incorrect
Question 3 of 8

3. Question
1 point(s)
Jadual menunjukkan jisim awal 2 bahan radioaktif X dan Y serta separuh hayat mereka. Jika jisim X dan Y menjadi sama selepas 18 jam, cari nilai m.
Correct

Incorrect
Question 4 of 8

4. Question
1 point(s)
Separuh hayat sampel radioaktif X adalah 280 tahun. Jisim radioisotop X adalah 32g. Berapakah jisim radioisotop X pada 1120 tahun yang lalu?
- 512g
- 256g
- 4g
- 2g
Correct

Incorrect
Question 5 of 8

5. Question
1 point(s)
Rajah menunjukkan graf aktiviti radioisotop X terhadap masa. Apakah separuh hayat bahan radioaktif ini?
- 4 hari
- 8 hari
- 12 hari
- 2 hari
Correct

Incorrect
Question 6 of 8

6. Question
1 point(s)
Rajah menunjukkan jumlah atom yang tinggal, Z dalam sampel radioaktif terhadap masa. Berapa atom Z yang tinggal selepas 30 hari?
- 3.75 x 1024
- 6.00 x 1025
- 7.50 x 1024
- 1.50 x 1025
Correct

Incorrect
Question 7 of 8

7. Question
1 point(s)
Separuh hayat radioisotop Z adalah 6 hari. Yang manakah daripada graf berikut betul menunjukkan bagaimana kadar penguraian P berubah sepanjang masa?
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Question 8 of 8

8. Question
1 point(s)
Rajah di bawah menunjukkan lengkung peluruhan 4 radioisotop berbeza. Radioisotop yang manakah mempunyai separuh hayat yang paling pendek?
Correct

Incorrect