MCQOPTIONS
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MCQOPTIONS
| 1. |
Two radioactive materials A and B have decay constants 10λ and λ, respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of A to that of B will be 1/e after a time: |
| A. | \(\frac{1}{{9\lambda }}\) |
| B. | \(\frac{1}{{11\lambda }}\) |
| C. | \(\frac{{11}}{{10\lambda }}\) |
| D. | \(\frac{1}{{10\lambda }}\) |
| Answer» B. \(\frac{1}{{11\lambda }}\) | |