Physics A multiple-choice quiz consists of: 10 QuestionsQuestions are selected randomly from a collection of 20 questions. More Questions You will get deferent questions every time you take the quiz. Correct AnswersThere could be more than one correct answer, select all that apply.Skip QuestionsYou are allowed to scroll backward and forward before submitting your answers.10 MinutesThe quiz has a time limit. Time's up You can still submit your answers after the allowed period of time has ended . When ready, click Next to start the quiz. Name (Required) Email (Optional) Twitter (Optional) 1. Which of the following best defines isotopes of an element? Atoms with same number of neutrons and electrons but different number of protons. Atoms with same number of protons and neutrons but different number of electrons. Atoms with same number of protons and electrons but different number of neutrons. Atoms with same number of protons, electrons and neutrons. None 2. Technetium-99m and Technetium-99 are: Isotones Isomers Isobars Isotopes None 3. Which of the following is the principal decay mode of Tc-99m? Beta minus Isomeric transition Pair production Electron capture None 4. In isomeric transition decay, the extra energy in the nucleus is released by the emission of: Neutrons Gamma photons X-rays Electrons None 5. Image representation of raw data obtained from projections of the object for image reconstruction is called: Sinogram Star artifact Blank scan Uniformity projections None 6. When only image quality is considered, the best possible distance between the collimator and the patient’s body for a gamma-camera equipped with HRES collimator is: 10 cm 1 in Half the collimator diameter Contact None 7. Which of the following sentences correctly describes a positron? A particle having a mass equal to the proton and no charge A particle having a mass equal to the electron but opposite charge A particle having a mass equal to the electron and no charge A particle having a mass equal to the proton but opposite charge None 8. The ratio of net counts in the photopeak to net counts in the entire spectrum is called: Energy resolution Energy constant Photopeak efficiency Photopeak window None 9. Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting ionizing radiation. The emission is described as spontaneous meaning: The nucleus decays without collision with shielding material The nucleus decays after collision with another particle or atom The nucleus decays without collision with another particle or atom The nucleus decays after collision with shielding material None 10. The minimum amount of energy needed to overcome the forces holding the atom together is called: Thermal energy Holding energy Kinetic energy Binding energy None 1 out of 10 Time's upTime is Up! بواسطة ناصر المطيري|2021-03-31T11:37:09+03:00مارس 31st, 2021|لا توجد تعليقات شارك هذه الصفحة, واترك رأيك حول الموضوع باستخدام وسيلة التواصل التي تناسبك FacebookXLinkedInWhatsAppPinterestEmail عن: ناصر المطيري كبير أخصائيي الطب النووي في مستشفى حفر الباطن المركزي و مؤسس موقع نيوكليرمد. اضف تعليقا إلغاء الردتعليق Δ
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