Q.

 Is it true that the speed of sound is the fastest in steel?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
Sound travels fastest in steel because the speed of sound is the fastest in solid. Sound is a mechanical wave which needs a medium for its propagation. It can travel through a material medium like air, water, iron rods, wires etc. Sound travels faster in solid than liquid. And it travels faster in liquid than gases. Sound cannot travel through a vacuum as it needs a medium for propagation. The loudness of sound may increase or decrease with the medium of propagation.
 
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