Exam-style question
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Describe how the inverse-square law applies to gamma radiation intensity and provide an example of how intensity changes with distance.
Model answer
What a good answer should say
- The inverse-square law states that the intensity of gamma radiation is inversely proportional to the square of the distance from the source.
- For example, if the distance from a gamma source is doubled, the intensity decreases to one-fourth of its original value.
Explanation
Why this works
This answer effectively demonstrates understanding of the inverse-square law, illustrating the relationship between distance and intensity. It tests the student's ability to apply theoretical concepts to practical scenarios.
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