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 substance is 20 minutes. E The time interval between 33% decay and 67% decay.

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

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

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