Radio activity
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80k UsersA radioactive sample starts decaying at t = 0. After 10 days the number of decayed nuclei is found to be 75%. Then half life of the sample is
After 10 days the sample contains (1-0.75) x 100% i.e., 25% undecayed nuclei.
Now
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The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
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