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Half life of a radioactive element is 10...

Half life of a radioactive element is 10 days. What percentage of the element will remain undecayed after 100 days?

A

0.1

B

0.001

C

0

D

0.99

Text Solution

Verified by Experts

The correct Answer is:
b
In ten times of half life 99.9%, the element undergoes decay, then percentage of undecayed radioactive element will be 0.1%
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