Which of the following occurs when a sound wave strikes a large, smooth surface at 90 degree angle?

Which of the following formulas determines the impedance of a medium?

Which of the following crystals will produce sound with the lowest frequency? 

The attenuation coefficient for soft tissue using a 10MHz transducer is ________.

The dampening material in a transducer improves the systems lateral resolution.

The maximum imaging depth (depth of view) during an ultrasound exam is 10 cm. The sonographer adjusts the imaging depth to 20 cm. What happens to pulse repetition period? 

If the PRF of a transducer is increased, then the frequency of sound produced by the transducer remain the same.

Which of the following is associated with a broader bandwidth?

For pulsed wave transducers two characteristics of the active element combine to determine the frequency of sound are:  (multiple answers)

The matching layer