A) 1.5 Ci
B) 2.13 Ci
C) 7.88 Ci
D) 8.76 Ci
Correct Answer: B
Solution :
Activity \[\lambda \,\,.\,\,N\] \[=7.88\times {{10}^{-10}}\times \frac{15\times {{10}^{-3}}}{90}\times 6.023\times {{10}^{23}}\] \[=7.91\times {{10}^{-10}}dps\] \[=\frac{7.91\times {{10}^{10}}}{3.7\times {{10}^{10}}}\] = 2.13 CiYou need to login to perform this action.
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