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प्रश्न
What is the difference between infrasonic waves and ultrasonic waves ?
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उत्तर
Difference between infrasonic and ultrasonic waves
| Infrasonic waves | Ultrasonic waves |
| These waves have frequencies below 20Hz. | These waves have frequencies above 20 kHz. |
| They are produced by objects vibrating very slowly. | They are produced by objects vibrating very rapidly. |
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संबंधित प्रश्न
What is the audible range of the average human ear?
Fill in the blanks with suitable words.
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Choose the infrasonic waves and ultrasonic waves from the following frequencies :
(i) 10,000 Hz
(ii) 30,000 Hz
(iii) 18 Hz
(iv) 50,000 Hz
(v) 10 Hz
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(a) What type of sounds are (i) X (ii) Y, and (iii) Z ?
(b) Name one device which can produce sound like X.
(c) Name one device in a science laboratory which can produce sound like Y.
(d) Name one device in our homes which can produce sound like Z.
(e) What is the frequency range of sounds like Z ?
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