Advertisements
Advertisements
प्रश्न
How is ultrasound used for cleaning?
उत्तर
Ultrasound is generally used to clean parts located in hard-to-reach places, for example, spiral tubes, odd shaped parts, electronic components, etc. The objects to be cleaned are placed in a cleaning solution, and ultrasonic waves are sent into the solution. Due to the high frequency, dust, grease, and dirt particles get detached and drop out. The objects thus get thoroughly cleaned.
APPEARS IN
संबंधित प्रश्न
A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.
Explain the term 'amplitude' of a wave. Draw the diagram of a wave and mark its amplitude on it.
Define the 'frequency' and 'time-period' of a wave. What is the relation between the two?
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
What name is given to sound waves of frequencies higher than 20 kHz ?
Explain the term 'pitch' of a sound. On what factor does the 'pitch' of a sound depend ?
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Write any three applications (or uses) of ultrasound.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
In SONAR we use: