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Q.

For the graph shown in figure, which of the following statements is/are possible? 

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a

y-axis represents the activity of a radio nuclide

b

y-axis represents the number of nuclei decayed in a radio nuclide

c

None of the above

d

y-axis shows a number of nuclei of a radioactive element which is produced at a constant rate 

answer is A, B.

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Detailed Solution

N=N0eλt;R=R0eΔt Number of decayed nuclei =N0( 1- e-λt) If nuclei of a radioactive element ( decay constant λ )  is produced at a constant rate α, then at any time t number of active nuclei is given by N = αλ( 1 - e-λt).  

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