a 341 hz tuning fork is placed over a long tube that is submerged in a column of water. The first resonance occurs at 23.2 cm and the second at 74.6 cm. Calculate the speed of sound in air during this experiment?
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The resonance is a standing wave phenomenon in the air column and occurs when the column length is
`lambda/4,(3lambda)/4,(5lambda)/4,....` ,where `lambda=wavelength of the wave`
since first resonance =23.2 cm
and second resonance=74.6 cm
Thus velocity of the sound =`nlambda` , n=frequency=341hz
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