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प्रश्न
What are ultrasonics? Can you hear the ultrasonic sound?
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उत्तर
Sounds of frequency higher than 20,000 Hz are called the ultrasonics. We cannot hear the ultrasonic sounds.
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संबंधित प्रश्न
Fill in the blank.
________ produces a sensation in ears.
On what factor does the loudness of a sound depend ?
Which wave property determines loudness?
Name the two types of waves which can be generates in a long flexible spring (or slinky).
State the general name of the waves in which the particles of the medium vibrate :
(i) in the same direction as wave.
(ii) at right angles to the direction of wave.
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(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
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