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| Q. |
Instrument used to study the behaviour of a vibrating siring is : |
| A. | Barometer |
| B. | Hydrometer |
| C. | (2) Hygrometer |
| D. | (4) Sonometer |
| Answer» D. (4) Sonometer | |
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Explanation: A Sonometer is a device for demonstrating the relationship between the frequency of the sound produced by a plucked string, and the tension, length and mass per unit length of the string. These relationships are usually called Mersenne's laws after Marin Mersenne (1588-1648), who investigated and codified them. |
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