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ARRT Sonography Physics Penny questions with correct answers
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What type of wave is sound? a. Mechanical, transverse b. Mechanical, longitudinal c. Transverse, longitudinal d. Lateral wave CORRECT ANSWER b. sound is a mechanical longitudinal wave The frequency ranges for ultrasound are: a. < 20 Hz b. 20 to 20,000 Hz c. > 20 kHz d. > 2000 HZ CORRECT ANSWER c. ultrasound is defined as sound with a frequency > 20,000 Hz (20 kHz) The speed of sound in soft tissue is: a. 1.54 mm/s b. 1540 m/s c. 1540 km/s d. 1.54 m/us CORRECT ANSWER b. sound travels through soft tissue at 1540 m/s Which of the following transducers fires the elements in groups? a. Linear sequenced array b. Phased array c. Mechanical sector d. Linear phased array CORRECT ANSWE
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