Convolution-superposition method is :  A. Method to caleulate the primary dose in TPS B. Method to calculate the primary and secondary dose in TPS C. Method to calculate the equivalent square dose in TPS

Inverse Square Distance of 40” = 5mR New distance = 36”, what is your new dose ___________

A technician is in an area for 10 minutes and the reading on the survey meter is 5mR/h. What dose of radiation does the * ?technician receive

27. A shielded vial with a 1-mm thick lead shield contains Tc. If A. 11.8 mR/hr В. 23.5 mR/hr C. 47 mR/hr D. 94 mR/hr the unshielded sample yielded an exposure rate of 188 mR/hr, what will the exposure rate be from the shielded vial? (The lead HVL for Tc is 0.25 mm.) 28. If "Co gives an exposure rate of 38 R/hr at 2 m, at least how А. 2 В. 3 many HVLS of concrete shielding are required to reduce this exposure to below 2 R/hr at the same distance? (The concrete HVL for "Co is 6.2 cm.) С. 4 D. 5