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Question
Describe an experiment to show that sound cannot travel through vaccum.
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Solution
- Aim:
To prove that sound cannot travel through a vacuum and it needs a medium for propagation. - Materials Required:
Bell jar, mobile phone, and vacuum pump.
- Procedure:
- Take a bell jar and a mobile phone.
- Switch on the music on the mobile phone and place it in the jar.
- Now, pump out the air from the bell jar using a vacuum pump.
- As more and more air is removed from the jar, the sound from the mobile phone becomes feebler and finally, very faint.
- Conclusion:
This experiment proves that sound cannot travel in vacuum and it needs a medium.
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