QUESTION 19 If a radiographic technique is 75 kVp/90 mAs: a. Bremsstrahlung x-rays have a maximum energy of 90 kVp Ob. Characteristic x-ray energy increases if the voltage increases to 85 kVp O c. Bremsstrahlung x-ray energy is increased if the voltage is increased to 85 kVp Od. Characteristic x-rays are emitted only at 75 kVp Oe. Characteristic x-rays have an energy of 90 kev QUESTION 20 The efficiency of x-ray production increases as increases. a. mA O b. kVp c. time d. Both A and B