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CUSAT 2022 BTech Solved Paper Shift 1

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Question : 53

Total: 200

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

2.5‌gm
3.7‌gm
6.30‌gm
1.35‌gm

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