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Question
State four practical uses of ultrasonic vibrations.
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Solution
Uses of ultrasonic vibrations:
- These are used for dissipating fogs on the runways at the airports.
- These are used in the ultrasound scanning of internal organs of human body.
- These are used for making dish washing machines. In these machines, water and detergents are vibrated with ultrasonics vibrator. The vibrating particles of the dissolved detergent rub against the plates and clean them.
- These are used in SONAR (Sound navigation and ranging) to detect and find the distance of objects under water.
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RELATED QUESTIONS
A microphone is connected to the Y-input of a C.R.O Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produces on the screen are shown in following figure.
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| (a) | (b) | (c) |
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