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प्रश्न
Explain Why are stringed musical instruments provided with large sound boxes?
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उत्तर
The larger soundbox contains a large amount of trapped air. When the vibrations of the vibrating string are impressed upon the air, it starts vibrating with forced vibrations. As a large volume of enclosed air vibrates, a loud sound is produced.
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संबंधित प्रश्न
In the diagram below, A, B, C, D are four pendulums suspended from the same elastic string PQ. The lengths of A and C are equal to each other, while the length of pendulum B is smaller than that of D. Pendulum A is set into a mode of vibrations.

- Name the type of vibrations taking place in pendulums B and D.
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1) Name the phenomenon when the paper rider just vibrates.
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3) Why does the paper rider fly off when the stem of tuning fork B is touched to the box?
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Free and forced vibrations.
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