Which of the following is a longitudinal wave?
Alight
BsoundCORRECT
Cwater ripples
Dradio waves
JUPEBPhysicsWaves and Optics
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Why the answer is B, and why the others tempt you.
In a longitudinal wave the particles vibrate parallel to the direction of travel, forming compressions and rarefactions, which is how sound propagates. Light and radio waves are transverse electromagnetic waves, and surface water ripples are transverse.
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