MCQOPTIONS
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MCQOPTIONS
| 1. |
The count rate from a radioactive sample falls from \[4.0\times {{10}^{6}}\] per second to \[1\times {{10}^{6}}\]per second in 20 hour. What will be the count rate, 100 hour after the beginning? |
| A. | \[3.91\times {{10}^{3}}\text{ }se{{c}^{-1}}\] |
| B. | \[5.81\times {{10}^{4}}\text{ }se{{c}^{-1}}\] |
| C. | \[6.22\times {{10}^{5}}\text{ }se{{c}^{-1}}\] |
| D. | None of these |
| Answer» B. \[5.81\times {{10}^{4}}\text{ }se{{c}^{-1}}\] | |