The half life of a substance is `20` minutes. what is the time interval between `10%` decay and `55%` decay (approx).

" The half life of a substance is "20" minutes.What is the time interval between "33%" decay and "67" % decay? "

The half-life of a radioactive substance is 30 minutes, The time (in minutes) taken between 40 % decay and 85 % decay of the same radioactive substance is.

The half-life of a radioactive substance is 20 min. the time taken between 50% decay and 87.5% decay of the substane will be

Half-life of a substance is 10 minutes. The time between 33% decay and 67% decay is

Half life of a radio-active substance is 20 minutes. The time between 20 % and 80 % decay will be

If half life of an radioactive element is 20min. Find the time interval of 33% decay and 67%

The half-life of a radioactive element is 100 minutes . The time interval between the stage to 50% and 87.5% decay will be:

The half life of a radioactive substance is 24 days. What is the time interval (t_2-t_1) between the time t_2 " when " 2/3 of the original material had decayed and time t_1 " when " 1/3 of its original material has decayed ?

The half life of radioactive element is 20 min . The time interval between the stages of its 33% and 67% decay is