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प्रश्न
Complete the following sentence:
Infrasonic sound is of frequency ______________.
रिकाम्या जागा भरा
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उत्तर
Infrasonic sound is of frequency below 20 Hz.
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संबंधित प्रश्न
Complete the following sentence:
Ultrasound is of frequency ___________.
Name the sound of the frequency given below:
10 Hz
Name the sound of the frequency given below:
40 kHz
Sonar makes use of :
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An electromagnetic wave has a time period of 4 × 10-8 s. Calculate its frequency in MHz.
Ultraviolet radiation has a wavelength of 300Å. If the velocity of the electromagnetic wave is 3 × 108 ms-1. Calculate:
- frequency
- time period.
What are ultrasonic?
What are infrasonic and ultrasonic sounds?
What does SONAR stand for? Where do we make use of SONAR?
