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प्रश्न
Describe an experiment to show the production of sound having low and high pitch.
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उत्तर
Take few rubber bands some thicker and longer, few thinner and of shorter length. Cut and stretch these rubber bands by holding one end of the string in your mouth under the teeth and the other end in your hand. Now pluck these rubber bands one by one. The rubber bands thicker and longer will produce sound with a lower pitch. The rubber bands thinner and shorter will produce sound with a higher pitch.
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संबंधित प्रश्न
Fill in the blank.
The pitch of a sound depends on its ________.
How does a bat make use of ultrasonics waves to find its way?
Name the characteristic which differentiates two sounds of the same pitch and same loudness.
How can the pitch of sound produced in a piano be changed ?
What is the difference between a compression and a rarefaction in a sound wave? Illustrate your answer with a sketch.
What causes sound in air?
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 |
Waves created by Earth Quake are Infrasonic.
How do we hear the sound?
