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9th Class Science Sound

  • question_answer 47)
      Infrasound can be heard by (a) dog                               (b) bat                                     (c) rhinocerose                 (d) human beings

    Answer:

      (c) Infrasound are the waves whose frequency is less than 20 Hz. Rhinoceroses communicate using infrasound of frequency as low as 5 Hz,


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