For an individual to reduce exposure by a factor of 25, the distance between the individual and source of ionizing radiation should

Question

Quizplus · Accepted Answer

The exposure to ionizing radiation decreases inversely proportional to the square of the distance from the source. So, if an individual wants to reduce their exposure by a factor of 25, the distance between the individual and the source of ionizing radiation should increase by √25 = 5 times. Therefore, option A) is the correct answer.

For an Individual to Reduce Exposure by a Factor of 25