Exam-style question
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What happens to the intensity of gamma radiation as the distance from the source increases?.
- A.It increases linearly with distance.
- B.It decreases with the square of the distance.
- C.It remains constant regardless of distance.
- D.It decreases exponentially with distance.
Model answer
What a good answer should say
- It decreases with the square of the distance.
Explanation
Why this works
The intensity of gamma radiation follows the inverse-square law, which states that intensity is inversely proportional to the square of the distance from the source. Therefore, as the distance increases, the intensity decreases according to this relationship.
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