Exam-style question
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What happens to the intensity of an X-ray beam as it passes through a material?.
- A.It increases exponentially.
- B.It decreases exponentially.
- C.It remains constant.
- D.It fluctuates randomly.
Model answer
What a good answer should say
- It decreases exponentially.
Explanation
Why this works
The intensity of an X-ray beam decreases exponentially as it passes through a material due to absorption and scattering of the photons, which is described by the exponential attenuation law.
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