Physics > 2003 > 40
JAMB UTME
The count rate of a radioactive material is 800 count/min. If the half-life of the material is 4 days, what would be the count rate 16 days later?
A.
200 count/min
B.
100 count/min
C.
50 count/min
D.
25 count/min
Answer: C
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