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प्रश्न
An earthquake produces which kind of sound before the mainshock wave begins
पर्याय
ultrasound
infrasound
audible sound
none of the above
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उत्तर
infrasound
Explanation:
An earthquake produces infrasound before the mainshock wave begins.
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संबंधित प्रश्न
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)?
How is sound perceived by us?
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
State the relation between the wavelength and the frequency.
What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.
What is the ratio of speed of light to speed of sound?
Give an example to show that light travels faster than sound?
Write any two uses of ultrasonic sound.
What do you understand by the term echo?
