Radioactive material 'A' has decay constant '8 lambda ' and material B has decay constant lambda initially they have same no. Of nuclei. After what time, ratio of no. Of nuclei of material B to that A will be 1/e?
Asked by ay91555
12th July 2017,
1:10 PM
Answered by Expert
Answer:
The following steps are to be followed for solving the query:
Step 1) Since the problem deals with decay constants, use the radioactive decay formula 
.
.Step 2) Apply the formula for both materials A and B and find the equation NA and NB.
Step 3) Divide NA and NB as the ratio is given. Equate it to 1/e (given). You should get 
.
.Step 4) Substitute decay constant for A and B and find the answer for t. You should get 
.
.
Answered by Expert
12th July 2017,
5:10 PM
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