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The activity of a radioactive sample is ...

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

A

0.8 Ci

B

0.4 Ci

C

0.1 Ci

D

0.16 Ci

Text Solution

Verified by Experts

The correct Answer is:
C
Since four half-lives have elapsed.
`therefore` Activity, `A = (A_(0))/(2^(4)) = (A_(0))/(16) = (1.6)/(16)` curie = 0.1 curie
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