NEET Class neet Answered
Please answer the following question with explanation
Asked by deepakudgiri29 | 19 Feb, 2019, 10:46: PM
Expert Answer
Radioactivity of sample at time T1 is
X = λ N1
Radioactivity of sample at time T2 is
Y = λ N2
Number of atoms that have disintegrated in the time (T2-T1) = N1 -N2
= (X-Y)/λ
X = λ N1
Radioactivity of sample at time T2 is
Y = λ N2
Number of atoms that have disintegrated in the time (T2-T1) = N1 -N2
= (X-Y)/λ
And it is given 1/λ = t
So number of atom disintegrated = (X- Y)× t
So option 4 is correct.
Answered by Ankit K | 20 Feb, 2019, 11:58: AM
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