Q:

How will increasing the filtration of an x-ray beam reduce the intensity of the x-ray spectrum?

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How will increasing the filtration of an x-ray beam reduce the intensity of the x-ray spectrum?


  1. equally at all frequencies
  2. more at lower frequencies than at higher frequencies
  3. more at higher frequencies than at lower frequencies
  4. only at lower frequencies

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B: Lower frequency radiation is less penetrating than higher frequency radiation, so the low frequency are preferentially absorbed compared to high frequency radiation.

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