Photons (50 KeV )from an X-ray tube fall on adjacent tissues below. Knowing that the thickness of the fat and muscle layers are 4.8 mm and 7.2 mm, respectively, and that the intensity of the incident beam in the fat is Io, the percentage of the incident beam that reaches the detector located after the muscle layer is: a) 50.4% b) 97.2% c) 85.8% d) 11.7% e) 77.1%

Photons (50 KeV )from an X-ray tube fall on adjacent tissues below. Knowing that the thickness of the fat and muscle layers are 4.8 mm and 7.2 mm, respectively, and that the intensity of the incident beam in the fat is Io, the percentage of the incident beam that reaches the detector located after the muscle layer is: a) 50.4% b) 97.2% c) 85.8% d) 11.7% e) 77.1%