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प्रश्न
Why are the stringed instruments like guitar provided with a hollow sound box?
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
How does the medium affect the amplitude of free/natural vibrations of a body?
Name the phenomenon involved in tuning your radio set to a particular station and define it.
Differentiate between the following:
Light and sound waves.
A bucket kept under a running tap is getting filled with water. A person sitting at a distance is able to get an idea when the bucket is about to be filled.
(i) What change takes place in the sound to give this idea?
(ii) What causes the change in the sound?
When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain.
State two ways in which resonance differs from forced vibrations.
Explain why are soldiers asked to walk out of step while crossing bridges?
Explain free and forced vibrations. Give an experimental arrangement to illustrate the phenomenon of resonance.
