In an exponential decay problem involving halflife what does

In an exponential decay problem involving half-life, what does this term mean? The length of time if takes for half of the lives to disappear. The time it takes for a given quantity to decay to half its original mass. The time it takes for half of the life forms to develop. The time it takes for half of the money to be spent.

Solution

In an exponential decay problem involving half-life, the term means the time it takes for a given quantity of a substance to get reduced/decay to half its oroiginal mass. The 2nd option is the correct answer.