RBS EXAM 1(QUESTIONS AND ANSWERS) 2023/202

RBS EXAM 1(QUESTIONS AND ANSWERS) 2023/2024 Energy - CORRECT ANSWER-measured in keV Radioactivity - CORRECT ANSWER-measured in Curie Absorbed dose - CORRECT ANSWER-measured in milligray (mGy) Radiation exposure - CORRECT ANSWER-measured in roentgen Equivalent dose - CORRECT ANSWER-millisievert (mSv) The average annual natural background radiation exposure to individuals living in the United States is approximately: - CORRECT ANSWER-3 mSv (300 mrem) what is not a form of ionizing radiation - CORRECT ANSWER-microwaves Little is known about the effects of ionizing radiation on biologic systems. - CORRECT ANSWER-false What are the two largest sources of artificial radiation exposure in the US? - CORRECT ANSWER-Diagnostic x-ray and nuclear medicine procedures his term is used as the best estimate of overall harm that might be produced by a given dose of radiation in human tissue. It takes into account both the type of radiation and the part of the body irradiated. - CORRECT ANSWER-effective dose (EfD) Ionizing radiation produces electrically charged particles that can cause biologic damage on molecular, cellular, and organic levels in humans. - CORRECT ANSWERTrue What is not a form of electromagnetic radiation - CORRECT ANSWER-Beta particles What is the difference between a 140 keV x-ray and a 140 keV gamma ray - CORRECT ANSWER-They have different origins Generally speaking which of the following types of radiation is least able to penetrate matter - CORRECT ANSWER-Alpha Which of the following types of ionizing radiation is a form of high energy light - CORRECT ANSWER-Gamma All other factors being equal which of the following types of radiation is most likely to cause biologic damage to living tissue - CORRECT ANSWER-Alpha X-ray production is not considered a radioactive process - CORRECT ANSWER-True Which of the following are a form of anti-matter - CORRECT ANSWER-Beta-plus particles (positrons) Which of the following types of radiation after being emitted from a nucleus of a radioactive atom immediately collides with an electron and undergoes an annihilation reaction - CORRECT ANSWER-Beta-plus particles (Positrons) What is the resting mass of an alpha particle in atomic mass units (Amu) - CORRECT ANSWER-4 What is the charge on a gamma photon - CORRECT ANSWER-0 Since it is exactly the same entity an electron and a beta minus particle have the same resting mass and electric charge - CORRECT ANSWER-True All particulate forms of radiation have mass - CORRECT ANSWER-True When passing through living tissue lower energy photons are actually more likely to cause biologic damage than high energy photons - CORRECT ANSWER-True By definition all forms of particulate radiation have charge - CORRECT ANSWER-False Two alpha particles - CORRECT ANSWER-Repel An alpha particle and an electron - CORRECT ANSWER-Attract An x-ray and electron - CORRECT ANSWER-Nothing A proton and an electron - CORRECT ANSWER-Attract A gamma ray and an electron - CORRECT ANSWER-Nothing A beta minus particle and a positron - CORRECT ANSWER-Attract The nucleus of an atom and an electron - CORRECT ANSWER-Attract The nucleus of an atom and an X-ray - CORRECT ANSWER-Nothing