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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

`1.5 xx10^(10)`

C

zero

D

infinity

Text Solution

Verified by Experts

The correct Answer is:
B
`N = N_0/2 - N_0/2^(4)`
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