RAD Physics Questions and Answers Already Passed

RAD Physics Questions and Answers Already Passed What is the smallest unit of matter? Atom What are the three primary subatomic particles in an atom? Protons, neutrons, and electrons What is the charge of a proton? Positive What particle carries a negative charge in an atom? Electron What is the nucleus of an atom composed of? Protons and neutrons 2 What does the atomic number of an element represent? The number of protons in the nucleus What does the mass number of an atom represent? The total number of protons and neutrons What happens to an atom when it gains or loses an electron? It becomes an ion What is the process of splitting a nucleus called? Nuclear fission What is the process of combining two nuclei to form a larger nucleus? Nuclear fusion What type of radiation consists of two protons and two neutrons? Alpha radiation 3 What type of radiation consists of high-energy electrons? Beta radiation What is electromagnetic radiation with the highest energy called? Gamma rays What is the speed of light in a vacuum? Approximately 3 x 108 meters per second What is the unit used to measure the frequency of electromagnetic waves? Hertz (Hz) What is the relationship between wavelength and frequency? They are inversely proportional What is the unit of energy commonly used in radiology? Electron volt (eV) 4 What is the phenomenon where X-rays are absorbed more by dense materials? Attenuation What is the primary source of X-rays in a medical X-ray tube? Electrons hitting the target material What is the most common target material used in X-ray tubes? Tungsten What happens to X-ray intensity as the distance from the source increases? It decreases following the inverse square law What is the main purpose of