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प्रश्न
Describe a simple experiment to show that the prongs of a sound producing tuning fork are vibrating.
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उत्तर
We should fill water in a beaker up to its brim. Now we should touch the surface of water with the prongs of a sound-making tuning fork that has been struck on a hard rubber pad earlier. The prongs of tuning fork that produces sound splashes water. This shows that the prongs of a sound-producing tuning fork are vibrating or rapidly traveling in forward and backward directions.
The prongs of a sound-producing tuning fork splash water, so they are vibrating.
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संबंधित प्रश्न
Name the physical qantity whose SI unit is 'hertz'.
A tuning fork has a number 256 marked on it. What does this number signify?
Which object is vibrating when the following sounds are produced?
(i) The sound of a sitar
(ii) The sound of a tabla
(iii) The sound of a tuning fork
(iv) The buzzing of a bee or mosquito
(v) The sound of a flute
How is sound produced? Explain with the help of an example.
Fill in the blank with suitable word.
When the frequency of the sound is increased, the wavelength ____________.
Draw the sketches of two waves A and B such that wave A has twice the wavelength and half the amplitude of wave B.
A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the strings.
(a) what is their wavelength?
(b) what is their frequency
(c) what is their speed?
How are different sound notes generated in musical instruments like guitar, which uses strings for sound generation, and flute, which uses blown air for sound generation?
How is sound produced in a human larynx and a loudspeaker?
Match the following:
| Human larynx | Vibrations of metal arms |
| Loudspeaker | Vibrations in air column |
| Jal-Tarang | Vibrations in vocal cords |
| Tuning fork | Vibrations in strings |
| Sitar | Vibrations of screen |
