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An instrument commonly used in laboratory to produce a sound of some particular frequency is :
  • a)
    Sonar
  • b)
    Electric bell
  • c)
    Tuning fork
  • d)
    A stretched wire
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
An instrument commonly used in laboratory to produce a sound of some p...
The correct answer is C as Tuning fork is an instrument used to produce sound in fixed frequency in laboratories. A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal .
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Community Answer
An instrument commonly used in laboratory to produce a sound of some p...
Tuning fork is used for producing various frequencies.  It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out.
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