In a gaseous medium, a sound wave is ___.

longitudinal

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transverse

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non-mechanical

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(a) and (b) above.

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Solution

The correct option is A longitudinal
In a sound wave in gaseous medium, particles vibrate about their mean position along the direction of the wave. Hence, sound wave is longitudinal in nature.
In gaseous medium, transerve waves are not possible because of the properties of gases.

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