Chapter 3 Section 3-5 Radiation dose vs Time, Distance, Shield questions & answers

Chapter 3 Section 3-5: Radiation
dose vs Time, Distance, Shield
questions & answers
What equation is used to calculate the total radiation dose based
on the time of exposure? - answer total dose = (dose rate) (time)


If a technologist is exposed to a source with a dose rate of 3.0
mrem/h for a period of 2 hours, what is the total radiation dose? -
answer (3.0 mrem/h) (2h) = 6.0 mrem


If the technologist is exposed to the source for 20 minutes, what
is total radiation dose? - answer Convert 3.0 mrem/h to 3.0
mrem/60min.


(3.0mrem)/(60 min) x (20 min) = 1.0mrem


You are next to a source with a dose rate of 15 uSv/h. What will be
your total radiation dose if you are exposed for 4 hours? - answer
(15 uSv/h) (4 h) = 60 uSv


time: 50 minutes
exposure rate: 3.0 mrem/h
What will be your total radiation dose? - answer look into well
book


exposure rate: 0.35 mrem/h

, time: 4hours
What is the total radiation dose? - answer look into well book


(a) What is the total radiation dose?
- time: 11 minutes
- exposure rate: 5.8 mrem/h


(b) What is the total radiation dose?
- time: 6 minutes
- exposure rate: 5.8 mrem/h - answer look into well book


If exposure to a source results in a radiation dose of 16 uSv/h,
what is the total radiation dose for a technologist who works next
to the source for 2.5 hours? - answer look into well book


What's the equation to use for radiation dose versus distance? -
answer (I1)(D1)^2=(I2)(D2)^2


I1 = intensity at original distance (D1)
I2 = intensity at new distance (D2)


You are standing 1 foot from a radioactive source and receiving a
radiation exposure dose of 20mrem/h. If you move to a position 2
feet from the source, what will be your rate of exposure? - answer
(20mrem/h)(1ft)^2 = (x)(f2ft)^2