InterviewSolution
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InterviewSolution
| 1. |
How would you show that sound needs a medium to propagate |
| Answer» <p>Materials needed:tall glass jar,bell,candle</p><p>Method:take a glass jar. attach a small bell to the bottom of the cap of the jar. close the jar with the cap. shakethe bottle and note the sound made by bell. now open the jar,place lighted candle in it and close thr jar again. wait for the candle to be extinguished. shake the bottle again. the sound is not produced.</p><p>the oxygen is taken up by the candle.so the bell does not produce any sound.</p><p>This proves that sound needs a medium to travel</p> | |