8th Class Science Sample Paper Science Sample Paper-3

  • question_answer What do you mean by vacuum? What happens to the loudness of sound in vacuum?                         

    Answer:

    When air is removed completely from a vessel, it is said that there is a vacuum. The decreasing amount of air decreases loudness of sound. If all air is sucked from the vessel, the sound would stop completely. The sound cannot travel through a vacuum.


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