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Q.

Is it true that the speed of sound is greater in water than in air?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
Sound is produced due to vibrations. The sound travels by compression and rarefaction of the molecules of the medium. In water, the particles are very closely organized and can quickly transfer vibration energy from one particle to the other. This means that the sound wave moves over four times faster than it would move in the air, but it requires a lot of energy to start the vibration.
 
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