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. The minimum amount of energy needed to overcome the forces holding the atom together is called: Thermal energy Binding energy Holding energy Kinetic energy 2. In isomeric transition decay, the extra energy in the nucleus is released by the emission of: Electrons Gamma photons X-rays Neutrons 3. 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: Half the collimator diameter 10 cm 1 in Contact 4. Dual time-point imaging (DTPI) can improve accuracy of positron emission tomography (PET) imaging. DTPI technique is a specialized protocol in which: Delay imaging is performed Dual-isotope technique is applied Two days delay imaging is performed Flow study is performed followed by static imaging 5. Which of the following radionuclides has the highest kinetic energy of the positron? N-13. F-18. Rb-82. C-11. 6. Which of the following is the principal decay mode of Tc-99m? Isomeric transition Electron capture Pair production Beta minus 7. 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 after collision with shielding material The nucleus decays after collision with another particle or atom The nucleus decays without collision with shielding material The nucleus decays without collision with another particle or atom 8. One of two or more different nuclides having the same mass number is called: Isotone Isobar Isotope Isomer 9. Elements with same atomic number and different atomic mass number are called? Isobars Isomers Isotones Isotopes 10. Which of the following is the half-life? Reciprocal of the decay constant. Time taken for the number of radioactive nuclei to decrease by a factor of two. Time taken for the number of radioactive nuclei to increase by a factor of two. Decay constant multiplied by the natural logarithm of two. 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. اترك تعليقاًCancel reply
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