Question

- Important values I needed for this question. Average Exposure to Radiation from Common Sources Source Dose (mrem/year) Naturally occurring Radiation res rec Cosmic rays Terrestrial radiation (rocks, building) Inside human body (K-40 and Ra-266 in the bones) Radon in the air Total 200 2reg 294 Artificial Radiation 2reg 2reg Medical Xraye Nuclear medicine Consumer products Nuclear power plants All others Total Grand total 0.5 1.5 65.0 359 Use the data on the table to decide which is more serious: an accident involving radiation exposure in which a person receives 3.59x10+ Sy or the amount of radiation that the average person receives annually from cosmic rays. (I rem -0.01 Sv) Submit Answer Ratry Entire Group 5 more group attempts remaining <Previous Next

Answer 1

We will convert Sv into mrem so that we can compare easily

As we know that

1 rem = 0.01 Sv

1rem = 1000 mrem

In an accident person receives radiation

R1 = 3.59*10^-4 Sv x 1rem/0.01Sv

= 3.59*10^-2 rem x 1000mrem/rem

= 35.9 mrem

From cosmic rays person receives radiation

R2 = 27 mrem/yr

R1 > R2

In an accident person receives radiation is more serious.