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`8.0mCi` सक्रियता का रेडियोऐक्‍टिव स्त्रोत प्राप्त करने के लिए `._(27)^(60)Co` की कितनी मात्रा की आवश्यकता होगी? `._(27)^(60)Co` की अर्धायु 5.3 वर्ष ह

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`8.0mCi` सक्रियता का रेडियोऐक्‍टिव स्त्रोत प्राप्त करने के लिए `._(27)^(60)Co` की कितनी मात्रा की आवश्यकता होगी? `._(27)^(60)Co` की अर्धायु 5.3 वर्ष है।
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Correct Answer - `7.126xx10^(-6)g`
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