Which one of the following statements is true for sound waves propagating in air?

  1. A. Sound is an electromagnetic wave and transverse in nature
  2. B. Sound is a mechanical wave and longitudinal in nature
  3. C. Sound is a mechanical wave and transverse in nature
  4. D. Sound is an electromagnetic wave and longitudinal in nature

Correct Answer: B. Sound is a mechanical wave and longitudinal in nature

Explanation

Sound waves require a material medium to propagate (mechanical) and travel as compressions and rarefactions in the direction of propagation (longitudinal).

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