At a given instant, there are 25% undecayed radioactive nuclei in a sample. After 10…
Physics · Class 12 · CBSE — Nuclei
At a given instant, there are 25% undecayed radioactive nuclei in a sample. After 10 seconds the number of undecayed nuclei reduces to 12.5%, the mean life of the nuclei is
- 10.21 s
- 14.43 s
- 5.31 s
- 7 . 43 s
Answer
(B) 14.43 s
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