Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A radioactive nucleus decays so that after 30 years, only 
of the initial sample is active. What is the half-life of sample?
Text Solution
Verified by ExpertsThe correct answer is:
B
of the initial samples is active after 30 days.
So, 
i.e., it required 3 half-life for this.
3 half life 
days.
So, 1 half life 
days
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