Physics · 2022
JEE Main · 27 July 2022, Shift 1 · Q48
What is the half-life period of a radioactive material if its activity drops to 1 / 16^th of its initial value in 30 years?
What is the half-life period of a radioactive material if its activity drops to $\displaystyle 1 / 16^{\text {th }}$ of its initial value in $\displaystyle 30$ years?
Official answer
(3)
7.$\displaystyle 5$ years
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