The graph shows the activity R as a function of the time t for three radioactive samples. Rank the samples according to their half-lives, shortest to longest.

Question

Quizplus · Accepted Answer

Sample 2 has the steepest slope, indicating it has the highest activity and therefore the shortest half-life. Sample 1 has a less steep slope than Sample 2, indicating a lower activity and longer half-life. Sample 3 has the shallowest slope, indicating the lowest activity and longest half-life. Therefore, the order from shortest to longest half-life is 2, 1, 3, making C the correct answer.

The Graph Shows the Activity R as a Function of the Time