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प्रश्न
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
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उत्तर
Sound cannot travel through Vacuum, but it requires a medium .
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संबंधित प्रश्न
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
'Note' is a sound :
Define the term wave velocity. Write its S.I. unit.
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
The wavelength of the vibrations produced on the surface of water is 2 cm. If the wave velocity is 16 ms-1, calculate:
- no. of waves produced in one second
- time required to produce one wave.
Can you hear each other in a dark room?
Explain how the principle of echo is used by
The bat during its flight at night
The amplitude of the sound wave decides its
Mention two cases in which there is no Doppler effect in sound?
What do you understand by the term echo?
