Physics-
General
Easy

Question

Two stereo speakers are separated by a distance of 2.4 m A person stands at a distance of 3.2 m as shown directly in front of one of the speakers The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)

  1. 160 left parenthesis 2 n plus left parenthesis A right parenthesis    
  2. 320 left parenthesis 2 n plus left parenthesis A right parenthesis    
  3. 200 left parenthesis 2 n plus left parenthesis A right parenthesis    
  4. 100 left parenthesis 2 n plus left parenthesis A right parenthesis    

The correct answer is: 200 left parenthesis 2 n plus left parenthesis A right parenthesis

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