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प्रश्न
Describe briefly an experiment to prove that vibrating bodies produce sound.
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उत्तर
Experiment: Take a tuning fork. It is a U-shaped fork made of steel provided with a handle.
Strike the tuning fork with a rubber hammer and hold it close to ear. A sound is heard. Now take a freely suspended pith ball and touch one end of the tuning fork (which is already hit with a rubber hammer) to it. It is observed that pith ball repeatedly flies outward. This experiment too proves that sound is produced by a vibrating body.
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संबंधित प्रश्न
Fill in the blank.
The number of times a body vibrates in one second is called its ______.
What is a longitudinal wave ?
Distinguish between compression and rarefaction.
Complete the following sentence :
Sound is produced by a ___________ body.
What do you mean by the audible range of frequency?
Sound travels in the form of ______.
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
Describe with diagram, how compressions and rarefactions are produced.
What is a longitudinal wave?
