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प्रश्न
In SONAR we use:
पर्याय
ultrasonic waves
infrasonic waves
radio waves
audible sound waves
उत्तर
ultrasonic waves
Ultrasonic waves are used in SONAR.
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 the working and application of a sonar.
Name the unit used to measure the loudness of sound. Also write its symbol.
Write the full name of 'SONAR'.
What happens to the pitch of a sound if its frequency increases ?
What name is given to sound waves of frequencies higher than 20 kHz ?
Fill in the blank with suitable word :
Quality of sound depends on ........................
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard.
Expand the abbreviation of the term SONAR.
