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

A radioactive substance reduces to 1/32 of its original value in 300 days. The half life of radioactive substance is

A radioactive element reduces to 25% of its initial value in 1000 years. What is half-life of the element ?

A radioactive element reduces to 25% of its initial value in 1000 years. What is half-life of the element ?

The activity of a radioactive substance is readuced by 80% in 100 days. Its half life is

A radioactive substance decays to 1/32 of its initial value in 25 days. Calculate its half life.

If a radioactive substance reduces to (1)/(16) of its original mass in 40 days, what is its half-life ?

The activity of a given sample of radioactive material is reduced to (1/32) of its initial value in 25 days. The half life 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?