Question
| 1. Natural radioactivity | (a) $3.7 \times 10^{10}$ decay $/$ second |
| 2. Artificial radioactivity | (b) spontaneous process |
| 3. 1 curie | (c) $10^6$ decay/second |
| 4. 1 Rd (Rutherford) | (d) induced process |
✓
Answer
1. (b) spontaneous process
2. (d) induced process
3. (a) $3.7 \times 10^{10}$ decay / second
4. (c) $10^6$ decay / second
2. (d) induced process
3. (a) $3.7 \times 10^{10}$ decay / second
4. (c) $10^6$ decay / second
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