If half-life of a radioactive element is `3` hours. After `9` hours its activity becomes

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 nucleide is 1 hour. In three hours its activity will be reduced by a factor of:

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

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

The half-life of a radioactive element is 10 hours. How much will be left after 4 hours in 1g atom sample?

The half life of a radioactive element is 8 hours. A given number of nuclei of that element is reduced to 1//4 of that number after two hours.