A piece of radioactive material contains 10 20 atoms. If the half life of the
PHYSICS
JAMB 2009
A piece of radioactive material contains 1020 atoms. If the half life of the material is 20 seconds, the number of disintegration in the first second is
- A) 3.47 x 1018
- B) 6.93 x 1020
- C) 3.47 x 1020
- D) 6.93 x 1018
Correct Answer: A) 3.47 x 1018
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