The decay constant of a radio active isotope is λ. If A 1 and A 2 are its activities at…
Physics · Class 12 · CBSE — Nuclei
The decay constant of a radio active isotope is λ. If A1 and A2 are its activities at times t1 and t2 respectively, then the number of nuclei which have decayed during the time (t1 – t2)
- A1t1 – A2t2
- A1 – A2
- (A1 – A2)/l
- l(A1 – A2)
Answer
(C) ( A 1 – A 2 )/ l
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