A radioactive nucleus A with a half life T, decays into a nucleus B. At t = 0, there is no nucleus B. At sometime t, the ratio of the number of B to that of A is 0.3. Then, t is given by:
A
B
C
D
t = T log (1.3)
Text Solution
Verified by ExpertsThe correct answer is:
C
At 
, Number of nuclei of 
be 
At 
, Number of nuclei of 
remaining, 
Number of nuclei of 
formed, 
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