Question

explain the experiment with neat diagram to prove the sound needs materials 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:

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