A solution containing active cobalt Co having activity of 0.8 μCi and decay constant λ is injected in an animal’s body. If 1 of blood is drawn from the animal’s body after 10 hrs of injection, the activity found was 300 decays per minute. What is the volume of blood that is flowing in the body? (1 Ci=3.7× decays per second and at t=10 hrs =0.84)
6 liters
7 liters
4 liters
5 liters
As we learned
Number of nuclei after disintegration -
or
- wherein
Number of nucleor activity at a time is exponentional function
let total volume of blood is V
Initial activity
Activity at
Activity of
V = 4.97 li
Option 1)
6 liters
Option 2)
7 liters
Option 3)
4 liters
Option 4)
5 liters
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