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Question

After a long time bombardment, number of 56Mn nuclei present in the target depends upon
i. the number of 56Mn nuclei present at the start of the process
ii. half-life of the 56Mn
iii. the constant rate of production P

A
All (i), (ii), and (iii) are correct
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B
only (i) and (ii) are correct
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C
only (ii) and (iii) are correct
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D
only (i) and (iii) are correct
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Solution

The correct option is C only (ii) and (iii) are correct
As the activity(A)=ln2half life×Number of particles(N) (1)
Here, A=P.
So from equation (1), Number of particles depends upon halflife and the constant rate of production P, but not on the number of particles at start of the process.

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