NEET · Physics · STD 12 - 13. Nuclei
The half life of a radioactive sample undergoing \(\alpha\) - decay is \(1.4 \times 10^{17}\) s. If the number of nuclei in the sample is \(2.0 \times 10^{21}\), the activity of the sample is nearly
- A \(10^{3} \;Bq\)
- B \(10^{4}\;Bq\)
- C \(10^{5}\;Bq\)
- D \(10^{6}\;Bq\)
Answer & Solution
Correct Answer
(B) \(10^{4}\;Bq\)
Step-by-step Solution
Detailed explanation
The activity (A) is defined as the rate of decay of radioactive substance. \(A=-\frac{d N}{d t}=N \lambda\)
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