Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes, respectively, Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be :
Text Solution
Verified by ExpertsThe correct answer is:
C
Given, 
half-lives of 
half-lives of 8 . Let the initial number of nuclei in each sample be N .
For radioactive element 
,
Number of A nuclides decayed
For radioactive element B,
⇒ Number of 
nuclides decayed
Ratio of decayed numbers of 
and I nuclei will be
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The half life of a radioactive substance is 20 minutes. The approximate time interval between the …
Statement-I: A nucleus having energy decays by emission to daughter nucleus having energy , but …
A radioactive nucleus A with a half life T, decays into a nucleus B. At t = 0, there is no nucleus …
A sample of radioactive material A, that has an activity of 10 mCi (1 Ci = 3.7 × 10 10 decays/s), h…
In a radioactive decay chain, the initial nucleus is . At the end there are -particles and 4 -pa…