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Class 12 Tuition > Learn NCERT Exercise 4 > During nuclear explosion, one of the products is 90Sr...
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During nuclear explosion, one of the products is 90Sr with half-life of 28.1 years. If 1μg of 90Sr was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolically.

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Here, It is known that, Therefore, 0.7814 μg of 90Sr will remain after 10 years. Again, Therefore, 0.2278 μg of 90Sr will remain after 60 years.
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Here, It is known that, Therefore, 0.7814 μg of 90Sr will remain after 10 years. Again, Therefore, 0.2278 μg of 90Sr will remain after 60 years. read less
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