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Describe an activity to that the sound requires a material medium for its propagation.
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Suspend a mobile phone inside an airtight glass jar as shown in the diagram connect the bell to vacuum pump, when a call is made to that phone, the ringing tone is heard. Start removing the air from the jar by using an vacuum pump.
The ringing tone feeble and feeble and cannot hear anyone. This experiment shows that sound cannot travel in vacuum, it needs a material medium for its propagation.
The ringing tone feeble and feeble and cannot hear anyone. This experiment shows that sound cannot travel in vacuum, it needs a material medium for its propagation.
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| Question Text | Describe an activity to that the sound requires a material medium for its propagation. |
| Answer Type | Text solution:1 |
| Upvotes | 150 |
