Q: SONAR is a device that is used to measure the distance of underwater objects by a ship. Which of the following types of waves does it use for this purpose?
(a)Infrasonic waves
(b)Sound waves in audible range for human beings
(c)Ultrasonic waves
(d)All of the above
Correct Answer: (b)
The correct answer is (d) 'All of the above'. This question from the Science & Technology domain tests knowledge of Computer & Information Technology.