A human body required the 0.01 M activity of radioactive substance after 24 h. Half life of radioactive substance is 6h. Then injection of maximum activity of radioactie substance that can be injected will be

Options

A. `0.08`
B. `0.04`
C. `0.16`
D. `0.32`

Answer

C

Explanation

At the end of 25 hrs. activity =0.01 M
half life =6 hrs
In 24 hrs . There are `24/6`=4 half life
Activity of substance after n half life `="(A)"/2^n`
`rArr "(A)"/2^4=0.01 (A)=0.16`