Answer:
Hey here is the answer
Step-by-step explanation:
itz a bell jar experiment
1) Place the electric bell in the jar
2) Pump out the air of the sealed bell jar
3) Turn on the bell jar, the sound produced by the bells jar is not audible
this demonstrate that the sound waves cannot travel through vacuum and it needs material medium for the propagation
Conclusion= the propagation of the sound is mediated by the air and that in the absence of the air medium , the sound waves cannot travel.
Comment if wrong
#Nonsense #GRG✓