The sound produced by the school bell will be heard by all of us irrespective of whether we are in a room at the back of the bell. What is the energy above the passage? What is the medium? Does sound travels only in air?
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The sound produced by the school bell will be heard by all of us irrespective of whether we are in a room at the back of the bell. What is the energy above the passage? What is the medium? Does sound travels only in air?
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