This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
[{'content': 'ionising radiation acts on tissue depending upon : \nSelect and explain. \nA. linear accelaration energy, B. thermal energy, C. formation of purine analogs, D. excitation of electron from orbit', 'role': 'user'}, {'content': 'Answer: D \nExplanation: onizing Radiation-radioactivity measurements it has linear radiating energy High energy paicles and photons that ionise atoms and molecules along their tracks in a medium are called ionizing radiation. For example, a, {3, y, cosmic rays and X-rays are ionizing radiation. Most radioactive measurement are based on their ionizing effect. Ionizing radiation causes illness such as cancer and death. Radiation effect is a health and safety concern. Ionizing radiation can also be used in industry for various purposes. Light and microwaves that do not ionize atoms and molecules are called non-ionizing radiation. Ionizing Radiation . ref : david sutton 9th ed', 'role': 'assistant'}]