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Question

Sound travels fastest in which of the following substances :

A
solids
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B
liquids
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C
gases
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D
none of these
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Solution

The correct option is A solids
The speed of sound depends on the density of the medium in which it is travelling and increases when the density increases. For example, in solids sound travels faster than in liquid and even faster than in gas, and the density is highest in solids, lower in liquids and lowest in gas. Hence, sound travels fastest in solids.

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