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Q.

How many times is the speed of sound in steel compared to the speed of sound in air?


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a

50

b

20

c

15

d

100 

answer is C.

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Detailed Solution

The speed of sound in steel is 15 compared to the speed of sound in air.
As we know, the sound waves travel by transferring the vibration to molecules in their way. Solid molecules are closer to each other than air, so the vibrations are transferred more efficiently and in a shorter time in case of solids.
 
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