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A sample of radioactive element has a mass of 10gm at an instant t=0. The approximate mass ofthis element in the sample after two mean lives is [2003]a)6.30 gmb)1.35 gmc)2.50 gmd)3.70 gmCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A sample of radioactive element has a mass of 10gm at an instant t=0. The approximate mass ofthis element in the sample after two mean lives is [2003]a)6.30 gmb)1.35 gmc)2.50 gmd)3.70 gmCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A sample of radioactive element has a mass of 10gm at an instant t=0. The approximate mass ofthis element in the sample after two mean lives is [2003]a)6.30 gmb)1.35 gmc)2.50 gmd)3.70 gmCorrect answer is option 'B'. Can you explain this answer?.

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