A radioactive isotope has initial activity of `28` dpm Its activity is reduced to `14` dpm after half an hour. The initial number of nuclide in sample was:

A radioactive sample has initial activity of 28 dpm 30 minutes later its activity 14 dpm . How many atoms of nuclide were present initially?

A radioactive sample has initial activity of 28 dpm 30 minutes later its activity 14 dpm . How many atoms of nuclide were present initially?

A radioactive sample has initial activity of 28 dpm 30 minutes later its activity 14 dpm . How many atoms of nuclide were present initially?

A radioactive sample had an initial activity of 56 dpm . After 69.3 minutes , it was found to have an activity of 28 dpm , the number of atoms in a sample having an activity of 100 dpm is 10^(x) . The value of x is …….

A radioactive sample had an initial activity of 56 dpm . After 69.3 minutes, it was found to have an activity of 28 dpm . Find the number of atoms in a sample having an activity of 100 dpm.

A radioactive sample had an initial activity of 56 dpm . After 69.3 minutes, it was found to have an activity of 28 dpm . Find the number of atoms in a sample having an activity of 100 dpm.

A radioactive sample had an initial activity of 56 dpm . After 69.3 minutes, it was found to have an activity of 28 dpm . Find the number of atoms in a sample having an activity of 100 dpm.

A radioactivity sample had an initial activity of 56dpm. After 69.3 minutes, it was found to have an activity of 28dpm, the number of atoms in a sampple having an activity of 10dpm, is 10""^(x) . The value of x is

A radioactive sample has an initial activity of 50 dpm, 20 minute later, the activity is 25 dpm . How many atoms of the radioactivity nuclide were there originally?