If the fraction of the atoms of a radioactive material left after 120years is 1/64; what is the half-life of the material? 1/64 By: Sunday|Published on: Nov 1|Categories: Physics JAMB| 0 comments A. 20 years B. 10 years C. 2 years D. 24 years Correct Answer: Option A – 20 years Users Also Read These:The percentage of the original nuclei of the sample…A radioactive substance has a half-life of 3 days.…A radioactive substance has a half-life of 20 hours.…A radioactive substance has a half-life of 20 hours.…the time it will take a certain radioactive material…SEE ALSO If the pressure of the vapour on top of an enclosed liquid is equal to the atmospheric pressure. What will be the temperature of the liquid enclosed?