JEE Main 202227 Jul, Morning shiftPhysicsEasyAtoms and Nuclei183× since 2002What is the half-life period of a radioactive material if its activity drops to 1/16th 1 / 16^{\text {th }}1/16th of its initial value in 30 years?AOption A. 9.5 yearsBOption B. 8.5 yearsCOption C. 7.5 yearsDOption D. 10.5 yearsCheckSkip · show solution