how will you know that sound requires a medium for propagation
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A sound wave needs a medium to travel. A sound wave travels in the form of a longitudinal wave and it requires a material medium for its propagation. Sound always originates from some vibrating body. ... The bell jar experiment is a common experiment used to demonstrate that sound needs a medium to travel.
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if you are able then you canmake your sound travell in the vacuum, it will not able to travell. and another expirement just get a rod and beat at the wall it will travel very fast because as molecule is tightly packed , sound will travel so far at a very high speed
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