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प्रश्न
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उत्तर
Frequency of vibrations of a stretched string depends upon:
1. Frequency of the fundamental note of a stretched string is inversely proportional to the length of the vibrating string.
2. Frequency is directly proportional to the square root of the tension of the string.
3. Frequency is inversely proportional to the square root of linear density. That is, mass per unit length of the material of the string. Thinner is the wire, higher is the frequency.
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संबंधित प्रश्न
Name the phenomenon involved in tunning a radio set to a particular station
The adjacent diagram shows three different modes of vibrations P, Q and R of the same string.

(i) Which vibration will produce a louder sound and why?
(ii) The sound of which string will have maximum shrillness?
(iii) State the ratio of wavelengths of P and R.
What are forced vibrations?
A vibrating tuning fork, held over an air column of a given length with its one end closed, produces a loud audible sound. Name the phenomenon responsible for it and explain the observation.
When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.
On keeping the stem of a vibrating tuning fork on the surface of a table, a loud sound is heard. Give reason.
The rearview mirror of a motorbike starts vibrating violently at some particular speed of the motorbike, what could be done to stop the violent vibrations.
Explain why are soldiers asked to walk out of step while crossing bridges?
Explain a tuning fork (vibrating) is held close to ear. One hears a faint sound. The same vibrating tuning fork is placed on table, such that its handle is in contact with table, one hears a loud sound.
Explain free and forced vibrations. Give an experimental arrangement to illustrate the phenomenon of resonance.
