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In two identical tubes A and B, tube A has both ends open, while tube B has one end closed. The ratio of fundamental frequency of tubes A and B is (A : B) -

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  1. 1 : 2 
  2. 1 : 4 
  3. 2 : 1 
  4. 4 : 1

Answer (Detailed Solution Below)

Option 3 : 2 : 1 
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Detailed Solution

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Formula Used:

  • Frequency of sound in open pipe = 
  • Frequency of sound in close pipe = 
  • If the frequency of open pipe is A and close pipe is B.
     

In that case,

A : B =  :  = 2 : 1

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