Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Using a nuclear counter the count rate of emitted particles from a radioactive source is measured. At 
it was 1600 counts per second and 
seconds it was 100 counts per second. The count rate observed, as counts per second, at 
seconds is close to:
Text Solution
Verified by ExpertsThe correct answer is:
A
In 8 seconds count rate becomes 
times.
half lives 
1 half lie 
In 6 s or 3 half lives, count rate 
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