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प्रश्न
What type of sound is produced by elephants and whales?
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उत्तर
The elephants and whales produce the sound of frequency less than 20Hz. (means infrasonic sounds)
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संबंधित प्रश्न
What is a longitudinal wave ?
Write the audible range of frequency for the normal human ear.
Explain the terms 'crests' and troughs' of a wave? What type of waves consist of crests and troughs?
Fig. shows three ways in which a string of length l in an instrument can vibrate.
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| (i) | (ii) | (iii) |
- Which of the diagram shows the principle note?
- Which vibration has the frequency four times that of the first?
- Which vibration is of the longest wavelength?
- What is the ratio of the frequency of the vibration in (i) and (ii)?
What causes sound?
Select the correct option:
A part of longitudinal wave in which particles of the medium are farther away than the normal particles is called :
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
Through which medium sound travels faster, iron or water? Give reason.
Longitudinal waves are produced in solids liquids and also in gases.
What happens to the speed of sound when it gases from a solid to a gaseous state?
