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  • Solve it, Velocity of sound in open ended tube is 330 m/s, the frequency of tuning fork is 1.1 kHz and the length of tube is 30 cm. In which harmonic will it oscillate.

Velocity of sound in open ended tube is 330 m/s, the frequency of tuning fork is 1.1 kHz and the length of tube is 30 cm. In which harmonic will it oscillate.

  • Option 1)

    2nd

  • Option 2)

    3rd

  • Option 3)

    4th

  • Option 4)

    5th

 

Answers (1)

best_answer

n\left [ \frac{v}{2l} \right ]= 1.1\times 10^{3}

n= \frac{2.2\times 10^{3}\times l}{v}\Rightarrow 2

 

Standing wave in a string fixed at both ends -

 

- wherein

\nu _{n}= \frac{n}{2L}.\sqrt{\frac{T}{\mu }}

n= 1,2,3...........

\nu _{n} frequency of nth harmonic .

T= tension in string

\mu = mass / length

 

 


Option 1)

2nd

This is correct

Option 2)

3rd

This is incorrect

Option 3)

4th

This is incorrect

Option 4)

5th

This is incorrect

Posted by

divya.saini

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