If a radioactive material remains 25% after 16 days, then its half life will be

After an interval on one day 1//6th of the initial amount of a radioactive material remains in a sample. Then its half life is

The percentage of quantity of a radioactive material that remains after 5 half-lives will be .

The percentage of quantity of a radioactive material that remains after 5 half-lives will be .

The percentage of quantity of a radioactive material that remains after 5 half-lives will be .

After an interval of one day , 1//16th initial amount of a radioactive material remains in a sample. Then, its half-life is .

After an interval of one day , 1//16th initial amount of a radioactive material remains in a sample. Then, its half-life is .

The half life of a radioactive material is 20 days . It it is heated to 1000 k, then its half life will become .

A radioactive material of mass number 198 decays with half life of 3 days. If initial amount of radioactive material is 2mg then its initial activity will be?

Ceratain radioactive substance reduces to 25% of its value is 16 days . Its half-life is

Ceratain radioactive substance reduces to 25% of its value is 16 days . Its half-life is