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      Question

      Which of the following waves require a medium to

      travel?┬а┬а
      A Light waves Correct Answer Incorrect Answer
      B Radio waves Correct Answer Incorrect Answer
      C Sound waves Correct Answer Incorrect Answer
      D Microwaves Correct Answer Incorrect Answer

      Solution

      Sound waves are mechanical waves, which require a medium (such as air, water, or solids) to travel.┬а┬а They cannot propagate in a vacuum.┬а┬а On the other hand, electromagnetic waves (like light, radio waves, and microwaves) do not require a medium and can travel through space.

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