If the dose rate from radiographic source of l+192 is 100hR, what will the dose rate be at the: sanve locakion; if you stand behind 10cm of concrete? Given: T0= n=TVL.thicknaiolmoterial Find If fthlikness of materiolen x TVI Exerclse 4 If the dose rote from rodiosraphic souroe of Co- 60 is 245RR, whot will the dose rate be at the same location, if you stand behind a 1 inah sted plate? Glven: J11= n Find l ? Exerclse 5 Behind a 2 inch steel door, the radiabion intencity from rodiographic source of ir-192 is 0.1hR, whot is the radiation intensity, if we soins to open that door. Tf= n= Find 1 . A tenth value layer (TVL) is the amount of shielding that will attenuate a beam of radiation to 101 of its initial value. If=10Ie n - number of tenth value layers Ir-final intensity (dose rate) same distance from source, but with shielding Io-originalintensity(doserate)withoutshielding A half value layer (HVL) is the amount of shielding that will attenuate a beam of radiation to 21 of its initial value. lt=2nI0 n - number of half value layers I. final intensity (dose rate) same distance from source, but with shielding I.-original intensity (dose rate) without shielding If the dose rate from radiographic source of 1r192 is 100hR, what will the dose rate be at the same location, if you stand behind 10cm of concrete? Given: I0= n=TVLthicknessofmaterial= Find If (thickness of material =n TVL) Exercise 4 If the dose rate from radiographic source of Co-60 is 245hR, what will the dose rate be at the same location, if you stand behind a inch steel plate? Given: Ia= n= Find If Exercise 5 Behind a 2 inch steel door, the radiation intensity from radiographic source of ir-192 is 0.1hR, what is the radiation intensity, if we going to open that door If= n= Find I0