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9th Class Science Sound Question Bank 9th CBSE Science Sound

  • question_answer
      (a) What is meant by 'compression' and 'rarefaction' of a longitudinal wave? (b) Give well labelled graphical representation of a longitudinal wave.  

    Answer:

                                 (a) Compression It is that part of a longitudinal wave in which the particles of the medium are closer to one another than they normally are. Rarefaction It is that part of a longitudinal wave in which the particles of the medium are farther apart than normal,                        


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