Natural Science CLEP Prep Practice Exam

Question: 1 / 400

What type of waves are used in wireless technologies?

Mechanical Waves

Electromagnetic Waves

Wireless technologies such as radio, television, and cell phones utilize electromagnetic waves for transmission. These waves can travel through a vacuum and do not require a medium to travel through, making them ideal for wireless communication. Mechanical waves, like sound waves, require a medium to travel through and therefore are not suitable for wireless technology. Surface waves are also not used in wireless technologies as they are confined to the surface of a medium and cannot travel through a vacuum. Therefore, B is the correct answer.

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Sound waves

Surface Waves

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