A radioactive material has an initial amount 16 gm. After 120 days it – McqOptions

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1.	A radioactive material has an initial amount 16 gm. After 120 days it reduces to 1 gm, then the half-life of radioactive material is [CPMT 2003]
A.	60 days
B.	30 days
C.	40 days
D.	240 days
Answer» C. 40 days

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