Biomedical Engineering > GATE 2023 > X-ray Imaging
A normally incident X-ray of energy 140 keV passes through a tissue phantom and is detected by the detector as shown in the figure below. The phantom consists of tissue P with an absorption coefficient of 1 cm⁻¹ and a thickness of 1 cm, and tissue Q with an absorption coefficient of 10 cm⁻¹ and a thickness of 2 cm. Calculate the intensity (in µeV) detected by the detector. (Round off the answer to one decimal place.)
Correct : 1.8
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