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After a time equal to four half lives, t...

After a time equal to four half lives, the amount of radioactive material remaining undecayed is-

A

`6.25%`

B

`12.5%`

C

`25%`

D

`50%`

Text Solution

Verified by Experts

The correct Answer is:
A
`N=(N_(0))/(2^(n))=N/(N_(0))xx100 =6.25 %`
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