Assertion :The longitudinal waves are called pressure waves Reason: Propagation of longitudinal waves through a medium involves changes in pressure and volume of air, when compression and rarefaction are formed

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Longitudinal waves are waves in which the displacement of the medium is in the same direction as or the opposite direction to the direction of propagation of the wave. Mechanical longitudinal waves are called as pressure wave, because they produce increases and decreases the pressure.

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