The half-life of a radioactive nuclide is 20 hours. What fraction of original activity will remain after 40 hours?

The half-life of a radioactive nucleus is 20 hours. What fraction of original activity will remain after 40 hours?

The half-life of a radioactive nucleus is 20 hours. What fraction of original activity will remain after 40 hours?

The half life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be:

If the half-life of a radioactive sample is 10 hours its mean life is

If the half-life of a radioactive sample is 10 hours its mean life is

The half life period of a radioactive nuclide is 3 hour . In 9 hour its activity will be reduced by

The half-life period of a radioactive element is 1 h. After 3 h, what fraction of it will remain?

Half life of a radioactive sample is 2x years. What fraction of this sample will remain undecayed after x years?

If the half-life of a radioactive sample is 10 hours its mean life is ?