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प्रश्न
In SONAR we use:
विकल्प
ultrasonic waves
infrasonic waves
radio waves
audible sound waves
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उत्तर
ultrasonic waves
Ultrasonic waves are used in SONAR.
संबंधित प्रश्न
Give two practical applications of reflection of sound waves.
Explain how bats use ultrasound to catch a prey.
How is ultrasound used for cleaning?
Explain the term 'amplitude' of a wave. Draw the diagram of a wave and mark its amplitude on it.
A wave is moving in air with a velocity of 340 m/s. Calculate the wavelength if its frequency is 512 vibrations/sec.
Write the full name of 'SONAR'.
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 ........................
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.
Give one use of ultrasound in industry and one in hospitals.
