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प्रश्न
Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.
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उत्तर
When the stem of a vibrating fork is pressed against the table top, the tuning fork forces the table top to vibrate with its own frequency. These forced vibrations send forth a greater energy and produce large sound. Now, if the natural frequency of the table is equal to that of the vibrating fork, resonance occurs and a louder sound is heard.
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संबंधित प्रश्न
The pitch of sound depends on frequency.
A tuning fork produces sound of ................... frequency.
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If the amplitude of a wave is doubled, what will be the effect on its loudness?
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(a) the pitch of a note.
(b) the loudness of the sound heard.
(c) the quality of the note.
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
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What is the noise? Give an example.
What is meant by the ‘loudness’ of a sound? How is it related to the intensity?
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
