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प्रश्न
What are ultrasonic?
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उत्तर
Ultrasonic are sounds having frequency higher that 20 KHz and not audible to the human being.
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संबंधित प्रश्न
Complete the following sentence:
Ultrasound is of frequency ___________.
Name the sound of the frequency given below:
100 Hz
Name the sound of the frequency given below:
40 kHz
Explain how do bats locate the obstacles and prey in their way.
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
The sonic boom of an aircraft has a time period of 0.00005s. Calculate the frequency of sound produced.
Ultraviolet radiation has a wavelength of 300Å. If the velocity of the electromagnetic wave is 3 × 108 ms-1. Calculate:
- frequency
- time period.
What does SONAR stand for? Where do we make use of SONAR?
State the properties of ultrasound that make it useful.
The range of audible frequency for the human ear is
