Question

5. Explain the experiment, with neat
diagram, to prove the following:
"Sound needs material medium for
propagation.'​

Answer 1

Answer:

Bell jar experiment can prove that sound needs material medium for its propagation. Initially, the vacuum pump is 'OFF' so that air is present inside the jar. ... If the pump is used for a sufficiently long period, then the quantity of air inside the jar will be so low that the ringing sound outside it will not be audible

Answer 2

Answer:

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