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Sound Propagation

The speed of ...

Question

The speed of sound in the air, if the wind is blowing in direction of propagation of sound ___ the speed of sound when the wind is not blowing.

A

is greater than

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B

is less than

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C

is equal to

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D

does not depend upon

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Solution

The correct option is A
is greater than

Let, $V$ is the speed of sound in the air when the wind is not blowing. Let, $A$ be the speed the of wind.

The speed of sound in the direction of the wind is $V + A$ .

The speed of sound in the direction opposite to the wind is $V - A$ .

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