Which of the following waves requires a medium for propagation? (2022)

Which of the following waves requires a medium for propagation? (2022)

Step 1: Understand what a wave is. A wave is a disturbance that travels through space and matter.
Step 2: Learn about the two main types of waves: mechanical waves and electromagnetic waves.
Step 3: Identify mechanical waves. These waves need a medium (like air, water, or solid materials) to travel through. An example is sound waves.
Step 4: Identify electromagnetic waves. These waves do not need a medium and can travel through a vacuum (empty space). Examples include light waves and radio waves.
Step 5: Conclude that sound waves require a medium for propagation, while electromagnetic waves do not.

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