A radioactive substance decays to `((1)/(16))^(m)` of its initial activity in 40 days. The half-life of the radioacctive substance expressed in days is

A radioactive substance decays to ((1)/(16))^(th) of its initial activity in 40 days. The half-life of the radioacctive substance expressed in days is

A radioactive substance decays to ((1)/(16))^(th) of its initial activity in 80 days. The half life of the radioactive substance expressed in days is …….

A radioactive substance decays to 1//16^(th) of its initial mass in 40 days. The half life of the substance, in days, is :

A radioactive substance decays to 1/16 th of its initial mass in 40 days. The half life of the substance, in days, is?

A radioactive substance decays to 1/16 th of the initial mass in 40 days. The half life of the substance is….. Day.