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प्रश्न
When a tuning fork, struck by a rubber pad, is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column. Name the above phenomenon. How does the frequency of the loud sound compare with that of the tuning fork? State the unit for measuring loudness.
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उत्तर
Resonance frequency of loud sound is either equal to or an integer multiple of the natural frequency of tuning fork. Decibel.
संबंधित प्रश्न
Why is a loud sound heard at resonance?
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In fig. shows two tuning forks P and Q of the same frequency mounted on separate sound boxes with their open ends facing each other. The fork A is set into vibration. (i) Describe your observation. (ii) State the principle illustrated by this experiment.

The diagram below shows three different modes of vibration P, Q and R of the same string of a given length.
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| P | Q | R |
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