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 radionuclides has the highest kinetic energy of the positron? N-13. Rb-82. F-18. C-11. None 2. An atom with an unstable nucleus is called a: Radionuclide Radio wave Radiopharmaceutical Radiochemical None 3. Technetium-99m and Technetium-99 are: Isobars Isotones Isotopes Isomers None 4. Which of the following is the half-life? Decay constant multiplied by the natural logarithm of two. Time taken for the number of radioactive nuclei to decrease by a factor of two. Reciprocal of the decay constant. Time taken for the number of radioactive nuclei to increase by a factor of two. None 5. 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 and no charge A particle having a mass equal to the electron but opposite charge A particle having a mass equal to the proton but opposite charge None 6. The ratio of net counts in the photopeak to net counts in the entire spectrum is called: Energy resolution Photopeak window Energy constant Photopeak efficiency None 7. Dual time-point imaging (DTPI) can improve accuracy of positron emission tomography (PET) imaging. DTPI technique is a specialized protocol in which: Dual-isotope technique is applied Two days delay imaging is performed Flow study is performed followed by static imaging Delay imaging is performed None 8. The nucleus is composed of two types of particles called: Protons and electrons Neutrons and protons Electrons and quarks Quarks and protons None 9. 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, electrons and neutrons. 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. None 10. Which of the following is the principal decay mode of Tc-99m? Pair production Electron capture Isomeric transition Beta minus 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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