Class 12 Physics Modern Physics Nuclei
In an ore containing uranium, the ratio of to is . Calculate the age of the ore, assuming that all the leas present in the ore is the final stable product of . Take the half-life of to be yr.
(a)
(b)
(c)
(d)
Correct answer: (c) 
Solution: Let the initial mass of uranium be
Final mass of uranium after time
According to the law of radioactive disintegration.




.

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