Speed of sound in air is

343 m / s

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1234.8 k m / h r

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None

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Both

A

and

B

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Solution

The correct option is D Both $A$ and $B$
The spped of sound in air is $343 m / s$ .

This value when converted to $K m / h r$ becomes :

$v = 343 \times (\frac{18}{5}) K m / h r = 1234.8 K m / h r$ .

So, D is the correct answer.

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