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प्रश्न
The sound waves travel faster ______.
विकल्प
in liquids
in gases
in solids
in vacuum
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उत्तर
The sound waves travel faster in solids.
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संबंधित प्रश्न
What is sound ?
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)?
Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.
A thin metal plate is placed against the teeth of cog wheel. Cog wheel is rotated at a speed of 120 rotations per minute and has 160 teeth. Calculate:
- frequency of node produced.
- speed of sound, if wavelength is 1.05 m.
- what will be the effect when the speed of cog wheel is doubled?
The time interval between a lighting flash and the first sound of thunder was found to be 6 s. If the speed of sound in air is 330 ms-1, find the distance of the flash from the observer.
Name the factors on which the speed of sound depends.
What cause sound? Why do we require a material medium for the transmission of sound?
Match the following.
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
