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  • Tell me? A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27°C two successive resonances are produced at 20 cm and 73 cm of column l

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

  • Option 1)

     350 m/s

  • Option 2)

    339 m/s

  • Option 3)

    330 m/s

  • Option 4)

    300 m/s

 

Answers (1)

As we have learned @

V=2f(l_{2}-l_{1})

V=2*320*(0.73-0.20)

V=339.2m/s


Option 1)

 350 m/s

This is incorrect

Option 2)

339 m/s

This is correct

Option 3)

330 m/s

This is incorrect

Option 4)

300 m/s

This is incorrect

Posted by

Vakul

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