A radioactive substance has a half-life of 1 year. The fraction of thi – McqOptions

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1.	A radioactive substance has a half-life of 1 year. The fraction of this material, that would remain after 5 years will be [CPMT 2000]
A.	\[\frac{1}{32}\]
B.	\[\frac{1}{5}\]
C.	\[\frac{1}{2}\]
D.	\[\frac{4}{5}\]
Answer» B. \[\frac{1}{5}\]

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