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प्रश्न
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
विकल्प
sound will be louder but the pitch will not be different
sound will be louder and pitch will also be higher
sound will be louder but the pitch will be lower
both loudness and pitch will remain unaffected
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उत्तर
sound will be louder but the pitch will not be different
Explanation:
When the key of a mechanical piano is struck harder, the sound will be louder as it will vibrate with greater amplitude but the pitch will not be different as it does not depend on how hard the key is struck.
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संबंधित प्रश्न
Select the correct alternative :
We can hear sound of frequency
Are sound waves longitudinal or transverse?
What is the audible range of frequency for human?
What is sound? What causes it to produce?
Sound is generated by the rhythmic ______ of an object.
The wavelength of the vibrations produced on the surface of water is 2 cm. If the wave velocity is 16 ms-1, calculate:
- no. of waves produced in one second
- time required to produce one wave.
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 |
