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An Electric Bell is Suspended by Thin Wires in a Glass Vessel and Set Ringing. Describe and Explain What Happens If the Air is Gradually Pumped Out of the Glass Vessel. - Science

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ConceptPropagation of Sound Sound Needs a Medium to Travel

Question

An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.

Solution

If the air is gradually pumped out of the glass vessel, no sound of the electric bell can be heard because vacuum is created in the vessel and there are no air molecules to carry sound vibrations. Hence, sound waves require material medium for its propagation.

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Solution An Electric Bell is Suspended by Thin Wires in a Glass Vessel and Set Ringing. Describe and Explain What Happens If the Air is Gradually Pumped Out of the Glass Vessel. Concept: Propagation of Sound - Sound Needs a Medium to Travel.
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