Sound wave travelling through air is a:

Longitudinal wave

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Mechanical wave

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Electromagnetic wave

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Transverse wave

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Solution

The correct options are
A Longitudinal wave
B Mechanical wave
Sound wave travels as compressions and rarefactions of particles of medium. The particles of air oscillate parallel to the direction of motion of the wave. Hence, it travels as a longitudinal wave in air.
A wave that requires a medium to propagate is called a mechanical wave. Sound wave requires a medium to propagate. Hence, it is a mechanical wave.

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