JAMB Physics
A piece of radioactive material contains 1000 atoms. If its half-life is 20 seconds, the time taken for 125 atoms to remain is
a.
20 seconds
b.
40 seconds
c.
60 seconds
d.
80 seconds
Correct answer: C
JAMB Physics
A piece of radioactive material contains 1000 atoms. If its half-life is 20 seconds, the time taken for 125 atoms to remain is
20 seconds
40 seconds
60 seconds
80 seconds
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