A) 400
B) 300
C) 250
D) 200
E) 150
Correct Answer: D
Solution :
The half-life of source\[=\frac{8}{4}=2s\] Now, \[R={{R}_{0}}{{\left( \frac{1}{2} \right)}^{n}}\] \[R=1600{{\left( \frac{1}{2} \right)}^{\frac{6}{2}}}\] \[=1600{{\left( \frac{1}{2} \right)}^{3}}\] \[=200\]You need to login to perform this action.
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