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Question
Sound waves are ______.
Options
longitudinal
transverse
partly longitudinal and partly transverse
sometimes longitudinal and sometimes transverse
MCQ
Fill in the Blanks
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Solution
Sound waves are longitudinal.
Explanation:
Sound waves in air travel as compressions and rarefactions, with air particles vibrating parallel to the direction of propagation. Hence, sound waves in air are longitudinal. Gases cannot support transverse mechanical waves.
Avoid saying “sound is always longitudinal”, because transverse sound waves can occur in solids.
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