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General
Easy

Question

AB is a cylinder of length 1m fitted with a thin flexible diaphragm C at middle and two other thin flexible diaphragms A and B at the ends as shown. The portions AC and BC contain hydrogen and oxygen gases respectively. The diaphragms A and B are set into vibrations of the same frequency. The minimum frequency of these vibrations for which diaphragm C is a node is (Under the conditions of the experiment the velocity of sound in hydrogen is 1100 m/s and oxygen 300 m/s)

  1. 1100 Hz    
  2. 3300 Hz    
  3. 1650 Hz    
  4. 1500 Hz    

The correct answer is: 1500 Hz

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