Half life of a radio active element is 5 min . 10 sec . Time taken for 90% of it to disintergrate is nearly
If half life of an radioactive element is 20min. Find the time interval of 33% decay and 67%
Half life of a radioactive substance is 60 min. After 3 hours, the fraction of total number of atoms that have decayed would be
The half life of radioactive element is 20 min . The time interval between the stages of its 33% and 67% decay is
The half life of a radioactive element is 30 min. One sixteenth of the original quantity of element will be left after a. 1 hr b. 16 hr c. 4 hr d. 2 hr
We have two radioactive nuclei A and B . Both convert into a stable nucleus C . Nucleus A converts into C after emitting two two alpha -particles and three beta -particles. Nucleus B converts into C after emitting one. alpha -particle anf five beta -particles. A time t = 0 , nuclei of A are 4N_(0) and that of B are N_(0) . Half-life of A (into the conversion of C ) is 1min and that of B is 2min . Initially number of nuclei of C are zero. What are number of nuclei of C , when number of nuclei of A and B are equal ?
The average life of a radioactive element is 7.2 min. Calculate the time travel (in min) between the stages of 33.33% and 66.66% decay
