If the speed of sound in air is $V_{a}$ and the speed in water is $V_{w}$ . Then which of the following is true?

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V_{a} = V_{w}

V_{a} > V_{w}

V_{a} < V_{w}

None of the above

answer is C.

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Detailed Solution

If the speed of the sound in air is

V_{a}

and the speed in water is

V_{w}

V_{a} < V_{w}

is true.
Sound needs a medium to travel. The denser the medium greater will be the velocity of the sound waves through the medium. Water is far denser than air, so the speed of sound will be more in water than that in air.

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