Define the thickness of the water shield needed to reduce

Last updated: 6/9/2023

Define the thickness of the water shield needed to reduce the intensity of monochromatic y radiation with the photon energy of 200 keV by a factor of 10 The linear attenuation coefficient for water at 200 keV is 1 36 cm 1 Choose one answer O 0 6 cm O 4 2 cm 02 4 cm O 1 7 cm