MCQOPTIONS
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| 1. |
A radioactive element has a half life of 25 hours. After what time will 1/8 th of the initial number of atoms disintegrate? |
| A. | 4 hours 49 minutes |
| B. | 30 hours 41 minutes |
| C. | 0.5 minutes |
| D. | 48 hours 1 minutes |
| Answer» B. 30 hours 41 minutes | |