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The half-life of a sample of a radioacti...

The half-life of a sample of a radioactive substance is `1` hour. If `8 xx 10^10` atoms are present at `t = 0`, then the number of atoms decayed in the duration `t = 2` hour to `t = 4` hour will be

A

`2xx10^10`

B

`0.75xx10^10`

C

`1.5xx10^10`

D

Zero

Text Solution

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The correct Answer is:
C
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