A sample of radioactive element has a ma...

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

2.50 gm

1.35 gm

6.30 gm

3.70 gm

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AAKASH INSTITUTE ENGLISH-NUCLEI-Assignment Section A Objective (One option is correct )

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