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

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

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

Half-life of a radioactive substance is 20 minute. The time between 20% and 80% decay will be

Half-life of a radioactive substance is 18 minutes. The time interval between its 20% decay and 80% decay in minutes is