The half life of a radioactive substance is 20 s, the time taken for the sample to decay…
Physics · Class 12 · CBSE — Nuclei
The half life of a radioactive substance is 20 s, the time taken for the sample to decay by 7/8th of its initial value is
- 20 s
- 40 s
- 60 s
- 80 s
Answer
(C) 60 s
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