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The percentage of quantity of a radioact...

The percentage of quantity of a radioactive material that remains after 5 half-lives will be .

A

`1% `

B

`3%`

C

`5%`

D

`20%`

Text Solution

Verified by Experts

The correct Answer is:
B

`t=5T_n`
`(5T_n)/(T_n)`
`N=N_0 (1//2)`
`N=N_0/32`
`N(%) = 100/32 N_((0))=3%`
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