During mean life of a radioactive element, the fraction that disintegr – McqOptions

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1.	During mean life of a radioactive element, the fraction that disintegrates is [CPMT 2001]
A.	e
B.	\[\frac{1}{e}\]
C.	\[\frac{e-1}{e}\]
D.	\[\frac{e}{e-1}\]
Answer» D. \[\frac{e}{e-1}\]

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