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2015-04-24T20:37:59+05:30

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In solids the molecules are closely packed .this means that they have less space to vibrate and hit other molecules earlier .So the sound travels fastest in solids.
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2015-04-25T09:23:34+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
We know that molecules in solid are very closely packed compared to liquid and that of gases.

Sound travels due to collision of molecules.

More the molecule is,more the collision takes place and the sound thus produced in the medium is denser.

As in solids more molecules colloid to produce denser sound.

In liquid the collision between molecules are comparatively less than solid and thus the sound produced is less denser than that of solid.
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