Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Two radioactive substances 
and 
originally have 
and 
nuclei respectively. Half life of 
is half of the half life of 
. After there half lives of 
, number of nuclei of both are equal. The ratio 
will be equal to:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
After 
half life no of nuclei undecayed 
given 
So 3 half life of 
half life of 
Given, 
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