One half value layer of lead for Cobalt-60 is approximately:

Related MCQs

• The half value layer of lead for Co-60 is approximately 13 mm (0.5 in). If the radiation level on the source side of a 38 mm (1.5 in) lead plate is 0.64 Gy/h (64 R/h):, the radiation level on the opposite side is:
• One half value layer of lead for Iridium-192 is approximately:
• The radiation from 37 GBq (1 Ci) of Co-60 (0.145 Gy or 14.5R at 30.5 cm or 1 foot) is attenuated in air to approximately 5mR/h at a distance of approximately:
• The half-life of Co-60 is approximately:
• The half-life of Ir-192 is approximately:
• The half-life of Cs-137 is approximately:
• The half-life of Th-170 is approximately:
• When a mercury vapour black light is inadvertently cut off, approximately how long should it be allowed to cool before attempting to restart?
• Approximately what energy X ray machine would be required to have penetrating power equivalent to a Cobalt-60 source:
• The average energy of a Cs-137 source is approximately: