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22/01/2022 2:04 pm
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A sample of a radioactive nucleus A disintegrates to another radioactive nucleus B, which in turn disintegrates to some other stable nucleus C. Plot of a graph showing the variation of number of atoms of nucleus B versus time is
(Assume that at t = 0, there are no B atoms in the sample)
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22/01/2022 2:05 pm
Correct answer: (2)
Explanation:
A → B → C (stable)
Initially no. of atoms of B = 0 after t = 0, no. of atoms of B will starts increasing & reaches maximum value when rate of decay of B = rate of formation of B.
After that maximum value, no. of atoms will starts decreasing as growth & decay both are exponential functions, so best possible graph is (2).