A) 2 hours
B) \[1.5\] hours
C) 1 hours
D) \[2.5\] hours
Correct Answer: B
Solution :
Using \[\frac{A}{{{A}_{0}}}={{\left( \frac{1}{2} \right)}^{t/T}}\] or \[\frac{1}{32}={{\left( \frac{1}{2} \right)}^{7.5/T}}\] or \[{{\left( \frac{1}{2} \right)}^{5}}={{\left( \frac{1}{2} \right)}^{7.5/T}}\] or \[5=\frac{7.5}{T}\] i.e., \[T=1.5\] hours
You need to login to perform this action.
You will be redirected in
3 sec
