1. How much initial energy is needed to initiate pair production? a. 0.511 MeV b. 1.02 MeV c. 2.01 MeV d. 10 MeV 2. 1st step in CPR is a. Circulation maintenance b. Airways clearance c. Breathing management d. BP monitoring 3. To produce k-characteristic x-rays from Tungsten, the projectile electrons must have an energy (keV) of at least a. 50 b. 58 c. 67 d. 70 4. The quantity of X-ray from an X-ray exposure is directly related to a. mA b. mAs c. kVp d. FFD 5. The x-ray interaction that involves no loss of energy by the incident photon or ionization is a. Coherent b. Compton c. Photoelectric d. Pair production 6. What factors affect the characteristic radiation emitted from the x-ray tube? a. mA b. kVp c. Filtration d. Anode angle 7. Which of the following types of radiation cannot be produced at tube potentials of less than 70 kVp? a. Bremsstrahlung b. Scatter c. Characteristic d. Primary 8. The minimum dose of a TLD can detect is a. 1 µSv b. 5 µSv c. 10 µSv d. 100 µSv 9. Radioactivity is measured in: a. Air Kerma(Gya) b. Gray(Gyt) c. Sievert(Sv) d. Becquerel(Bq) 10. Wilhelm Conrad Rontgen discovered X-ray while working on : a. Rontgen Tube b. Coolidge Tube c. Crookes Tube d. Einstein Tube 11. Ideal time to perform HSG is •••. days of menstrual cycle. a. 1-7 b. 21-28 c. 12-18 d. 8-12 12.The use of an antiscatter grid has no effect on ..... a. Scatter clean up b. Image contrast c. X-ray beam energy d. Image gray scale 13. Which is also known as Policeman of abdomen? a. Lesser Omentum b. Mesentry c. Greater Omentum d. Mesoappendix 14. What is the expected DRL for shoulder,AP X-ray? a. ESD 0.5 mGy b. ESD 0.8 mGy c. ESD 1mGy d. ESD 1.5 mGy 15. The occupational dose limit to the lens of eye ls.... a. 15 mSv b. 20mSv c. 50mSv d. 1mSv Submit All