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प्रश्न
High-frequency sounds that cannot be heard by you are called _______.
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उत्तर
High-frequency sounds that cannot be heard by you are called Ultrasonic.
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संबंधित प्रश्न
'Note' is a sound :
The sound of an explosion on the surface of a lake is heard by a boat man 100 m away and by a diver 100 m below the point of explosion.
(i) Who would hear the sound first: boatman or diver?
(ii) Give a reason for your answer in part (i).
(iii) If sound takes time t to reach the boatman, how much time approximately does it take to reach the diver?
The speed of sound is more in hydrogen than in nitrogen. Is this statement true? Give a reason for your answer.
What is musical sound? Give an example.
What do you understand by the term sound energy?
The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is 160 ms-1, calculate:
- wavelength
- frequency
- amplitude.
How do the following factor affect the speed of sound in air?
Moisture in air.
A sound wave travels 2000 m in 8 s. What is the velocity of the sound?
How do we hear the sound?
