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प्रश्न
What are ultrasonic? State and explain two applications of ultrasounds.
उत्तर
Ultrasonic sound is the sound having frequency more than 20KHz. The application of ultrasonic sound is as follows:
(i) It is used to detect the flaws in metal casting of automobile tyres.
(ii) Used in hospitals to detect defects in certain parts of the body.
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संबंधित प्रश्न
Complete the following sentence:
Infrasonic sound is of frequency ______________.
Complete the following sentence:
Bats can produce and hear ___________ sound.
State two applications of ultrasound.
The properties of ultrasound that make it useful are
How do bats locate their prey during a flight?
The sonic boom of an aircraft has a time period of 0.00005s. Calculate the frequency of sound produced.
What does SONAR stand for? Where do we make use of SONAR?
What are hearing aids?
State the main components of a hearing aid.
Bats produce ______ sound during screaming.
