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NEET 2003 Physics question

PhysicsNucleiNEET 2003

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

Answer: (1)

Solution

Mean life . The mass left after time : . For : g. Option (1) is correct. The mass after one

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Question ID VK-089171