A tuning fork is used to produce resonance in glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 o C two successive resonances are pr

Question

A tuning fork is used to produce resonance in glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of $27^{o} C$ two successive resonances are produced at $20 cm$ and $73 cm$ of column length. If the frequency of the tuning fork is $320 Hz$ , the velocity of sound in air at $27^{o} C$ isNEET 2018

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Answer:

B

Solution:

In resonance tube experiment,

Speed of sound $v = 2 f (l_{2} - l_{1})$

$= 2 (320) \times (0.73 - 0.20)$

$= (640) \times (0.53) = 339.2 m s^{- 1}$

TestHub · Accepted Answer

In resonance tube experiment, Speed of sound v = 2 f l 2 - l 1 = 2 320 × 0.73 - 0.20 = 640 × 0.53 = 339 . 2 m s - 1

Physics - Sound Wave Question with Solution | TestHub

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