The half life of a radioactive element is 30 days, in 90 days the percentage of…
Physics · JEE Main · NTA Exams — Atoms and Nuclei
The half life of a radioactive element is 30 days, in 90 days the percentage of disintegrated part is :–
- 13.5 %
- 46.5 %
- 87.5%
- 90.15%
Answer
(C) 87.5%
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