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The activity of a radioactive sample is ...

The activity of a radioactive sample is measured as `9750` counts per minute at `t = 0` and as `975` counts per minute at `t = 5` minutes. The decay constant is approximately

A

`0.922//min`

B

`0.691//min`

C

`0.461//min`

D

`0.230//min`

Text Solution

Verified by Experts

The correct Answer is:
C
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