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

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

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

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.

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 sample drops fo 1//32 of its initial value in 7.5 h. Find the half life ?

A radioactive element decays to 1//32th of its initial activity in 25 decay. Calculate 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 ?