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प्रश्न
The bees do not have voice-boxes. How do they produce sound ?
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उत्तर
The bees do not have the voice-boxes. Still they produce sound.
This happens by the vibrations produced by the quick movement of their wings. Bees buzz while flying and depositing pollen among flowers.
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संबंधित प्रश्न
How do we produce sound ?
What are wavelength, frequency, time period and amplitude of a sound wave?
Distinguish between loudness and intensity of sound.
What type of wave is represented :
(a) by density-distance graph?
(b) by displacement-distance graph?
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.
A sound wave of wavelength 1/3 m has a frequency 996 Hz. Keeping the medium same, if frequency changes to 1328 Hz. Calculate
- velcoity of sound
- new wavelength.
Vibration of object produces ______.
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
The elastic property of medium is a factor of ______ medium.
