JEE Main 202127 Jul, Morning shiftPhysicsEasyAtoms and Nuclei183× since 2002
If 'f' denotes the ratio of the number of nuclei decayed (N_d) to the number of nuclei at t = 0 (N₀) then for a collection of radioactive nuclei, the rate of change of 'f' with respect to time is given as :
[ is the radioactive decay constant]