Ultrasound MCQ (Multiple Choice Questions) PDF Download

Sounds of frequency higher than 20,000 Hz which are inaudible to normal human ear are called

1. noise
2. frequency
3. ultrasonic
4. amplitude

SONAR is the abbreviation of

1. small navigation and random
2. sky navigation and ranging
3. sun nuclear ranging
4. sound navigation and ranging

A ship sends an ultrasound that returns from the seabed and is detected after 3.42 s. If the speed of the ultrasound through seawater is 1300 ms^-1, then the distance of the seabed from the ship would be

1. 3000 m
2. 2600 m
3. 2200 m
4. 2800 m

Ultrasonic waves carry more

1. energy only
2. frequency only
3. heat
4. energy and frequency

The wavelength of ultrasonic waves is

1. more than audible sound
2. less than audible sound
3. equal to audible sound
4. greater than light wave