The half-life of a radioactive substance is 20 min. The approximate time interval (t 2 –…
Physics · JEE Main · NTA Exams — Atoms and Nuclei
The half-life of a radioactive substance is 20 min. The approximate time interval (t2 – t1) between the time t2 when
2/3 of it has decayed and time t1 when 1/3 of it had decayed is
2/3 of it has decayed and time t1 when 1/3 of it had decayed is
- 14 min
- 20 min
- 28 min
- 7 min
Answer
(B) 20 min
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