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Question

The vibrating of four air columns are represented in the figure The ratio of frequencies n subscript p end subscript colon n subscript q end subscript colon n subscript r end subscript colon n subscript s end subscript text  is end text

  1. 12 : 6 : 3 : 5    
  2. 1 : 2 : 4 : 3    
  3. 4 : 2 : 3 : 1    
  4. 6 : 2 : 3 : 4    

The correct answer is: 1 : 2 : 4 : 3

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