Through which of the following routes can radon enter houses?1. Crawl spaces under living areas2. Floor drains and sump pumps3. Porous cement block foundations

Because of the OSL dosimeter’s sensitivity down to as low as 10 µSv for x-ray and gamma ray photons in the energy range 5 keV to 40 MeV, it is an excellent and practical monitoring device for

In the electromagnetic spectrum, higher frequencies are associated with

Calculation of effective dose (ED) requires: 1. absorbed dose (D) 2. type of radiation (Wr) 3. tissue exposrd (Wt)

The millisievert (mSv) is equal to

How does filtration affect the primary beam 1. it increases the average energy of the primary beam 2. it decreases the average energy of the primary beam 3. it makes the useful beam more penetrating 4. it increases the intensity of the primary beam 5. it decreases x-ray beam quality 6. it decreases patient dose

Which of the following are forms of electromagnetic radiation?1. Microwaves2. Visible light3. X-rays4. Gamma rays5. Ultraviolet radiation

Which of the following is not a requirement that radiation survey instruments must meet?

Which two interactions between x-radiation and matter may result in the production of small-angle scatter?

What unit is used to measure radiation exposure in the metric International System of Units?