A sample of a radioactive element has a mass of 10 g at an instant t = 0. The approximate…
Physics · Class 12 · CBSE — Nuclei
A sample of a radioactive element has a mass of 10 g at an instant t = 0. The approximate mass of this element in the sample left after two mean lives is
- 1.35 g
- 2.50 g
- 3.70 g
- 6.30 g
Answer
(A) 1.35 g
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