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Questions  

If the temperature increases, then what happens to the frequency of the sound produced by the organ pipe

a
Increases
b
Decreases
c
Unchanged
d
Not definite

detailed solution

Correct option is A

Due to rise in temperature, the speed of sound increases. Since n=vλ and λ remains unchanged, hence n increases.

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A tube of certain diameter and of length 48 cm is open at both ends. Its fundamental frequency of resonance is found to be 320 Hz. The velocity of sound in air is 320 m/s. One end of the tube is now closed, considering the effect of end correction, calculate the lowest frequency of resonance for the tube (in Hz). 


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