Radiation Health and Safety Test Radiation Health and Safety Test Radiation Physics & Principles 2

Question 1

What does the term 'linear energy transfer' (LET) describe?

Accepted Answer

Energy deposited per unit path length in tissue

Answer

Speed of a particle in tissue

Answer

Total energy of ionizing radiation

Answer

Fraction of energy absorbed by an organ

Question 2

What is the primary difference between ionizing and non-ionizing radiation?

Accepted Answer

Ionizing radiation has enough energy to remove electrons from atoms

Answer

Ionizing radiation travels faster

Answer

Non-ionizing radiation cannot be reflected

Answer

Ionizing radiation only comes from radioactive materials

Question 3

Which law describes how radiation intensity decreases with distance from a point source?

Accepted Answer

Inverse square law

Answer

Beer-Lambert law

Answer

Ohm's law

Answer

Stefan-Boltzmann law

Question 4

What type of radioactive decay results in the emission of a helium-4 nucleus?

Accepted Answer

Alpha decay

Answer

Beta minus decay

Answer

Beta plus decay

Answer

Gamma decay

Question 5

In radiology, what is the function of filtration added to an X-ray beam?

Accepted Answer

Remove low-energy photons that would only contribute to dose without diagnostic value

Answer

Increase patient dose

Answer

Increase beam intensity

Answer

Convert X-rays to visible light

Question 6

What is the effective dose equivalent unit used to account for biological effects of different radiation types?

Accepted Answer

Sievert (Sv)

Answer

Gray (Gy)

Answer

Curie (Ci)

Answer

Becquerel (Bq)