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Describe in brief, with the aid of a ske...

Describe in brief, with the aid of a sketch diagram, an experiment to demonstrate that a material medium is necessary for propagation of sound.

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### Step-by-Step Solution: 1. **Materials Required**: - An electric bell - An airtight glass jar (bell jar) - A vacuum pump - A power source (battery or electrical supply) - A switch to operate the electric bell ...
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