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प्रश्न
Write true or false for a given statement.
The frequency is measured in hertz.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
Fill in the blank.
We can hear sounds of frequency in the range of _______
What is sound ?
State the factors on which the pitch of a sound depends.
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
Fig. shows three ways in which a string of length l in an instrument can vibrate.
 |
 |
 |
| (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 is sound? How is it produced?
What is sound? What causes it to produce?
he sound of an explosion on the surface of a lake is heard by a boatman 120 m away and by a diver 120 m below the point of explosion. Out of the two persons, who would hear the sound first? Why?
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
