Advertisements
Advertisements
प्रश्न
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
उत्तर
Sonar is a device used to find the depth of a sea through ultrasonic sound waves.
APPEARS IN
संबंधित प्रश्न
A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?
Explain how defects in a metal block can be detected using ultrasound.
How does the pitch of a sound depend on frequency ?
How is an ultrasound scan for fetus (unborn baby) better than X-ray ?
What name is given to sound waves of frequencies higher than 20 kHz ?
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Fill in the blank with suitable word :
Quality of sound depends on ........................
What is meant by the 'loudness' of sound ? On what factor does the loudness of a sound depend ?
Which of the two produces ultrasonic waves : porpoise or whale ?
The depth of an ocean can be determined by ______.
