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  • The activity of a radioactive sample is 1.6 curie, and its half-life is 2.5 days. Its activity after 10 days will be:Option: 1 0.8 curie<br

The activity of a radioactive sample is 1.6 curie, and its half-life is 2.5 days. Its activity after 10 days will be:

Option: 1

0.8 curie


Option: 2

0.4 curie


Option: 3

0.1 curie 


Option: 4

0.16 curie


Answers (1)

best_answer

n\left(\frac{10}{2.5}\right)=4

\frac{A}{A_0}=\left(\frac{1}{2}\right)^n \Rightarrow A=1.6\left(\frac{1}{2}\right)^4

A=0.1 \text { Curie. }

Posted by

shivangi.shekhar

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