describe a simple experiment of bell to show that sound cannot propagate through vaccum.
Answers
The Bell-Jar Experiment -->
Objective :
To show sound can't propagate through vacuum
Apparatus Required :
1) A glass jar
2) Electronic Bell
3) Vacuum pump
4) Switch (electric connection)
Procedure :
1) An electric bell is taken inside an airtight glass jar.
2) It is suspended inside the jar.
3) The jar is connected to a vacuum pump.
4) The switch is on and air is started to be pumped out.
Observations :
1) At first we can hear the sound of bell clearly.
2) As soon as air is pumped out, the sound of bell starts to become feeble
3) After the air is completely vacated out, no sound is heard.
Conclusion :
This means as a vacuum is created in the jar, no sound is heard.This means sound always requires a material medium to travel.
Hope This Helps You!
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Answer:
A ringing electric bell is placed inside an airtight bell jar containing air. We can hear the sound of the ringing bell clearly. ... Thus, when vacuum is created in the bell jar, the sound of the ringing bell placed inside it cannot be heard. This shows that sound cannot travel through vacuum...
