Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 31 - Nuclei > A sample of a radioactive element has a mass of 10g at an instant t=0. The approximate mass of this element in the sample after two mean lives is .

A sample of a radioactive element has a mass of 10g at an instant t=0. The approximate mass of this element in the sample after two mean lives is .

A sample of a radioactive element has a mass of 10g at an instant t=0. The approximate mass of this element in the sample after two mean lives is .