If `1/16`th of a usbstance is left after 40 days then the half life is

Half-life period of a substance is 20 days. After 30 days what percentage of the substance will be left.

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

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

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

Aradioactive isotope decays at such a rate that after 96 minutes only 1/8th of the original substance is left. The half life period of the nucleide 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 its initial activity in 40 days. The half-life of the radioacctive substance expressed in days is