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प्रश्न
What is musical sound? Give an example.
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उत्तर
It is a pleasant, continuous and uniform sound which is produced by a vibrating body making periodic and regular vibrations, e.g., the sound produced by flute, violin, etc.
संबंधित प्रश्न
Why are sound waves called mechanical waves?
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)?
In fig. 2 two musical notes of the same pitch and same loudness are played on a violin and on a piano. Their wave forms are as shown in the diagram below. Explain why the wave patterns are different.
An observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey.
High-frequency sounds that cannot be heard by you are called _______.
Longitudinal waves are produced in solids liquids and also in gases.
The speed of sound in air at 0°C is ______.
Assertion: The sound of thunder is heard a little later than the flash of light.
Reason: The speed of sound is much less than the speed of light.
