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प्रश्न
Why are the stringed instruments like guitar provided with a hollow sound box?
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उत्तर
The sound box is constructed such that the column of the air inside it, has a natural frequency which is the same as that of the strings stretched on it, so that when the strings are made to vibrate, the air column inside the box is set into forced vibrations. Since the sound box has a large area, it sets a large volume of air into vibration, the frequency of which is same as that of the string. So, due to resonance a loud sound is produced.
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संबंधित प्रश्न
Name the phenomenon involved in tunning a radio set to a particular station
Give one example to illustrate forced vibrations.
Describe a simple experiment to illustrate the phenomenon of resonance and explain it.
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- Give the reason for your observation in each case.
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(ii) Name the type of oscillation, D will execute.
(iii) If the length of D is made equal to C then what difference will you notice in the oscillations of D ?
(iv) What is the name of the phenomenon when the length of D is made equal to C ?
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- Give reason for your observation in part (a).
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- Give reason for the answer in part (c).
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(i) What change takes place in the sound to give this idea?
(ii) What causes the change in the sound?
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