The activity of a radioactive element reduces to `(1//16)th` of its original value in 30 years. Find its half life?

If the activity of a radiacctive element drops to frac(1)(16)th of its inital value in 40 years. Find its half-life period.

The nuclear activity of a radioactive element becomes (1/8)^(th) of its initial value in 30 years. The half-life of radioactive element is ________ years.

The radioactivity of a certain radioactive element drops to 1//64 of its initial value in 30 seconds. Its half-life is.

The radioactivity of a certain radioactive element drops to 1//64 of its initial value in 30 seconds. Its half-life is.

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

A radioactive element reducess to 32st of its initial value in 1000 years . What is half life of the element ?

A radioactive element reducess to 32st 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 ?

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

A radioactive material reduces to 1/8 th of its initial amount in 18000 y. Find its half-life period.