If the half-life of a radioactive sample is 10 hours, its mean life is – McqOptions

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1.	If the half-life of a radioactive sample is 10 hours, its mean life is [MP PET 1994]
A.	14.4 hours
B.	7.2 hours
C.	20 hours
D.	6.93 hours
Answer» B. 7.2 hours

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